{"id":56231,"date":"2021-03-03T09:52:08","date_gmt":"2021-03-03T04:22:08","guid":{"rendered":"https:\/\/ccssmathanswers.com\/?p=56231"},"modified":"2022-04-01T10:28:07","modified_gmt":"2022-04-01T04:58:07","slug":"eureka-math-grade-3-module-7-lesson-21","status":"publish","type":"post","link":"https:\/\/bigideasmathanswers.com\/eureka-math-grade-3-module-7-lesson-21\/","title":{"rendered":"Eureka Math Grade 3 Module 7 Lesson 21 Answer Key"},"content":{"rendered":"

Engage NY Eureka Math 3rd Grade Module 7 Lesson 21 Answer Key<\/h2>\n

Eureka Math Grade 3 Module 7 Lesson 21 Sprint Answer Key<\/h3>\n

A
\nMultiply or Divide by 3
\n\"Engage
\nAnswer:
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-\"<\/p>\n

Question 1.
\n2 \u00d7 3 =
\nAnswer:
\n2 \u00d7 3 = 6.<\/p>\n

Question 2.
\n3 \u00d7 3 =
\nAnswer:
\n3 \u00d7 3 = 9.<\/p>\n

Question 3.
\n4 \u00d7 3 =
\nAnswer:
\n4 \u00d7 3 = 12.<\/p>\n

Question 4.
\n5 \u00d7 3 =
\nAnswer:
\n5 \u00d7 3 = 15.<\/p>\n

Question 5.
\n1 \u00d7 3 =
\nAnswer:
\n1 \u00d7 3 = 3.<\/p>\n

Question 6.
\n6 \u00f7 3 =
\nAnswer:
\n6 \u00f7 3 = 2.<\/p>\n

Question 7.
\n9 \u00f7 3 =
\nAnswer:
\n9 \u00f7 3 = 3.<\/p>\n

Question 8.
\n15 \u00f7 3 =
\nAnswer:
\n15 \u00f7 3 = 5.<\/p>\n

Question 9.
\n3 \u00f7 3 =
\nAnswer:
\n3 \u00f7 3 = 1.<\/p>\n

Question 10.
\n12 \u00f7 3 =
\nAnswer:
\n12 \u00f7 3 = 4.<\/p>\n

Question 11.
\n6 \u00d7 3 =
\nAnswer:
\n6 \u00d7 3 = 18.<\/p>\n

Question 12.
\n7 \u00d7 3 =
\nAnswer:
\n7 \u00d7 3 = 21.<\/p>\n

Question 13.
\n8 \u00d7 3 =
\nAnswer:
\n8 \u00d7 3 = 24.<\/p>\n

Question 14.
\n9 \u00d7 3 =
\nAnswer:
\n9 \u00d7 3 = 27.<\/p>\n

Question 15.
\n10 \u00d7 3 =
\nAnswer:
\n10 \u00d7 3 = 30.<\/p>\n

Question 16.
\n24 \u00f7 3 =
\nAnswer:
\n24 \u00f7 3 = 8.<\/p>\n

Question 17.
\n21 \u00f7 3 =
\nAnswer:
\n21 \u00f7 3 = 7.<\/p>\n

Question 18.
\n27 \u00f7 3 =
\nAnswer:
\n27 \u00f7 3 = 9.<\/p>\n

Question 19.
\n18 \u00f7 3 =
\nAnswer:
\n18 \u00f7 3 = 6.<\/p>\n

Question 20.
\n30 \u00f7 3 =
\nAnswer:
\n30 \u00f7 3 = 10.<\/p>\n

Question 21.
\n___ \u00d7 3 = 15
\nAnswer:
\n_5__ \u00d7 3 = 15.<\/p>\n

Question 22.
\n___ \u00d7 3 = 3
\nAnswer:
\n__1_ \u00d7 3 = 3.<\/p>\n

Question 23.
\n___ \u00d7 3 = 30
\nAnswer:
\n_10__ \u00d7 3 = 30.<\/p>\n

Question 24.
\n___ \u00d7 3 = 6
\nAnswer:
\n_2__ \u00d7 3 = 6.<\/p>\n

Question 25.
\n___ \u00d7 3 = 9
\nAnswer:
\n_3__ \u00d7 3 = 9.<\/p>\n

Question 26.
\n30 \u00f7 3 =
\nAnswer:
\n30 \u00f7 3 = 10.<\/p>\n

Question 27.
\n15 \u00f7 3 =
\nAnswer:
\n15 \u00f7 3 = 5.<\/p>\n

Question 28.
\n3 \u00f7 3 =
\nAnswer:
\n3 \u00f7 3 = 1.<\/p>\n

Question 29.
\n6 \u00f7 3 =
\nAnswer:
\n6 \u00f7 3 = 2.<\/p>\n

Question 30.
\n9 \u00f7 3 =
\nAnswer:
\n9 \u00f7 3 = 3.<\/p>\n

Question 31.
\n___ \u00d7 3 = 18
\nAnswer:
\n_6__ \u00d7 3 = 18.<\/p>\n

Question 32.
\n___ \u00d7 3 = 21
\nAnswer:
\n_7__ \u00d7 3 = 21.<\/p>\n

Question 33.
\n___ \u00d7 3 = 27
\nAnswer:
\n_9__ \u00d7 3 = 27.<\/p>\n

Question 34.
\n___ \u00d7 3 = 24
\nAnswer:
\n_8__ \u00d7 3 = 24.<\/p>\n

Question 35.
\n21 \u00f7 3 =
\nAnswer:
\n21 \u00f7 3 = 7.<\/p>\n

Question 36.
\n27 \u00f7 3 =
\nAnswer:
\n27 \u00f7 3 = 9.<\/p>\n

Question 37.
\n18 \u00f7 3 =
\nAnswer:
\n18 \u00f7 3 = 6.<\/p>\n

Question 38.
\n24 \u00f7 3 =
\nAnswer:
\n24 \u00f7 3 = 8.<\/p>\n

Question 39.
\n11 \u00d7 3 =
\nAnswer:
\n11 \u00d7 3 = 33.<\/p>\n

Question 40.
\n33 \u00f7 3 =
\nAnswer:
\n33 \u00f7 3 = 11.<\/p>\n

Question 41.
\n12 \u00d7 3 =
\nAnswer:
\n12 \u00d7 3 = 36.<\/p>\n

Question 42.
\n36 \u00f7 3 =
\nAnswer:
\n36 \u00f7 3 = 12.<\/p>\n

Question 43.
\n13 \u00d7 3 =
\nAnswer:
\n13 \u00d7 3 = 39.<\/p>\n

Question 44.
\n39 \u00f7 3 =
\nAnswer:
\n39 \u00f7 3 = 13.<\/p>\n

 <\/p>\n

B
\nMultiply or Divide by 3
\n\"Engage
\nAnswer:
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-B\"<\/p>\n

Question 1.
\n1 \u00d7 3 =
\nAnswer:
\n1 \u00d7 3 = 3.<\/p>\n

Question 2.
\n2 \u00d7 3 =
\nAnswer:
\n2 \u00d7 3 = 6.<\/p>\n

Question 3.
\n3 \u00d7 3 =
\nAnswer:
\n3 \u00d7 3 = 9.<\/p>\n

Question 4.
\n4 \u00d7 3 =
\nAnswer:
\n4 \u00d7 3 = 12.<\/p>\n

Question 5.
\n5 \u00d7 3 =
\nAnswer:
\n5 \u00d7 3 = 15.<\/p>\n

Question 6.
\n9 \u00f7 3 =
\nAnswer:
\n9 \u00f7 3 = 3.<\/p>\n

Question 7.
\n6 \u00f7 3 =
\nAnswer:
\n6 \u00f7 3 = 2.<\/p>\n

Question 8.
\n12 \u00f7 3 =
\nAnswer:
\n12 \u00f7 3 = 4.<\/p>\n

Question 9.
\n3 \u00f7 3 =
\nAnswer:
\n3 \u00f7 3 = 1.<\/p>\n

Question 10.
\n15 \u00f7 3 =
\nAnswer:
\n15 \u00f7 3 = 5.<\/p>\n

Question 11.
\n10 \u00d7 3 =
\nAnswer:
\n10 \u00d7 3 = 30.<\/p>\n

Question 12.
\n6 \u00d7 3 =
\nAnswer:
\n6 \u00d7 3 = 18.<\/p>\n

Question 13.
\n7 \u00d7 3 =
\nAnswer:
\n7 \u00d7 3 = 21.<\/p>\n

Question 14.
\n8 \u00d7 3 =
\nAnswer:
\n8 \u00d7 3 = 24.<\/p>\n

Question 15.
\n9 \u00d7 3 =
\nAnswer:
\n9 \u00d7 3 = 27.<\/p>\n

Question 16.
\n21 \u00f7 3 =
\nAnswer:
\n21 \u00f7 3 = 7.<\/p>\n

Question 17.
\n18 \u00f7 3 =
\nAnswer:
\n18 \u00f7 3 = 6.<\/p>\n

Question 18.
\n24 \u00f7 3 =
\nAnswer:
\n24 \u00f7 3 = 8.<\/p>\n

Question 19.
\n30 \u00f7 3 =
\nAnswer:
\n30 \u00f7 3 = 10.<\/p>\n

Question 20.
\n27 \u00f7 3 =
\nAnswer:
\n27 \u00f7 3 = 9.<\/p>\n

Question 21.
\n___ \u00d7 3 = 3
\nAnswer:
\n__1_ \u00d7 3 = 3.<\/p>\n

Question 22.
\n___ \u00d7 3 = 15
\nAnswer:
\n_5__ \u00d7 3 = 15.<\/p>\n

Question 23.
\n___ \u00d7 3 = 6
\nAnswer:
\n_2__ \u00d7 3 = 6.<\/p>\n

Question 24.
\n___ \u00d7 3 = 30
\nAnswer:
\n_10__ \u00d7 3 = 30.<\/p>\n

Question 25.
\n___ \u00d7 3 = 9
\nAnswer:
\n_3__ \u00d7 3 = 9.<\/p>\n

Question 26.
\n6 \u00f7 3 =
\nAnswer:
\n6 \u00f7 3 = 2.<\/p>\n

Question 27.
\n3 \u00f7 3 =
\nAnswer:
\n3 \u00f7 3 = 1.<\/p>\n

Question 28.
\n30 \u00f7 3 =
\nAnswer:
\n30 \u00f7 3 = 10.<\/p>\n

Question 29.
\n15 \u00f7 3 =
\nAnswer:
\n15 \u00f7 3 = 5.<\/p>\n

Question 30.
\n9 \u00f7 3 =
\nAnswer:
\n9 \u00f7 3 = 3.<\/p>\n

Question 31.
\n___ \u00d7 3 = 18
\nAnswer:
\n_6__ \u00d7 3 = 18.<\/p>\n

Question 32.
\n___ \u00d7 3 = 24
\nAnswer:
\n_8__ \u00d7 3 = 24.<\/p>\n

Question 33.
\n___ \u00d7 3 = 27
\nAnswer:
\n_9__ \u00d7 3 = 27.<\/p>\n

Question 34.
\n___ \u00d7 3 = 21
\nAnswer:
\n_7__ \u00d7 3 = 21.<\/p>\n

Question 35.
\n24 \u00f7 3 =
\nAnswer:
\n24 \u00f7 3 = 8.<\/p>\n

Question 36.
\n27 \u00f7 3 =
\nAnswer:
\n27 \u00f7 3 = 9.<\/p>\n

Question 37.
\n18 \u00f7 3 =
\nAnswer:
\n18 \u00f7 3 = 6.<\/p>\n

Question 38.
\n21 \u00f7 3 =
\nAnswer:
\n21 \u00f7 3 = 7.<\/p>\n

Question 39.
\n11 \u00d7 3 =
\nAnswer:
\n11 \u00d7 3 = 33.<\/p>\n

Question 40.
\n33 \u00f7 3 =
\nAnswer:
\n33 \u00f7 3 = 11.<\/p>\n

Question 41.
\n12 \u00d7 3 =
\nAnswer:
\n12 \u00d7 3 = 36.<\/p>\n

Question 42.
\n36 \u00f7 3 =
\nAnswer:
\n36 \u00f7 3 = 12.<\/p>\n

Question 43.
\n13 \u00d7 3 =
\nAnswer:
\n13 \u00d7 3 = 39.<\/p>\n

Question 44.
\n39 \u00f7 3 =
\nAnswer:
\n39 \u00f7 3 = 13.<\/p>\n

Eureka Math Grade 3 Module 7 Lesson 21 Problem Set Answer Key<\/h3>\n

Question 1.
\nOn your centimeter grid paper, shade and label as many rectangles as you can with a perimeter of 16 centimeters.
\na. Sketch the rectangles below, and label the side lengths.
\nb. Find the area of each rectangle you drew above.
\nAnswer:
\na. \"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka
\nb. Area of the ABCD Rectangle = 7 square cm.
\nArea of the EFGH Rectangle = 12 square cm.
\nArea of the IJKL Rectangle = 15 square cm.<\/p>\n

Explanation:
\na. \"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka
\nb.
\nFigure 1 : ABCD Rectangle
\nLength of the ABCD Rectangle = 7cm
\nWidth of the ABCD Rectangle = 1cm
\nArea of the ABCD Rectangle = Length\u00a0 \u00d7 Width
\n= 7cm \u00d7 1cm
\n= 7 square cm.<\/p>\n

Figure 2 : EFGH Rectangle
\nLength of the EFGH Rectangle = 6cm
\nWidth of the EFGH Rectangle = 2cm
\nArea of the EFGH Rectangle = Length\u00a0 \u00d7 Width
\n= 6cm \u00d7 2cm
\n= 12 square cm.<\/p>\n

Figure 3 : IJKL Rectangle
\nLength of the IJKL Rectangle = 5cm
\nWidth of the IJKL Rectangle = 3cm
\nArea of the IJKL Rectangle = Length\u00a0 \u00d7 Width
\n= 5cm \u00d7 3cm
\n= 15 square cm.<\/p>\n

 <\/p>\n

 <\/p>\n

Question 2.
\nOn your centimeter grid paper, shade and label as many rectangles as you can with a perimeter of 18 centimeters.
\na. Sketch the rectangles below, and label the side lengths.
\nb. Find the area of each rectangle you drew above.
\nAnswer:
\na. \"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka
\nb. Area of the ABCD Rectangle = 8 square cm.
\nArea of the EFGH Rectangle = 14 square cm.
\nArea of the IJKL Rectangle = 18 square cm.
\nArea of the MNOP Rectangle = 20 square cm.<\/p>\n

Explanation:
\na.
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka
\nb.<\/p>\n

Figure 1 : ABCD Rectangle
\nLength of the ABCD Rectangle = 8cm
\nWidth of the ABCD Rectangle = 1cm
\nArea of the ABCD Rectangle = Length\u00a0 \u00d7 Width
\n= 8cm \u00d7 1cm
\n= 8 square cm.<\/p>\n

Figure 2 : EFGH Rectangle
\nLength of the EFGH Rectangle = 7cm
\nWidth of the EFGH Rectangle = 2cm
\nArea of the EFGH Rectangle = Length\u00a0 \u00d7 Width
\n= 7cm \u00d7 2cm
\n= 14 square cm.<\/p>\n

Figure 3 : IJKL Rectangle
\nLength of the IJKL Rectangle = 6cm
\nWidth of the IJKL Rectangle = 3cm
\nArea of the IJKL Rectangle = Length\u00a0 \u00d7 Width
\n= 6cm \u00d7 3cm
\n= 18 square cm.<\/p>\n

Figure 4 : MNOP Rectangle
\nLength of the MNOP Rectangle = 5cm
\nWidth of the MNOP Rectangle = 4cm
\nArea of the MNOP Rectangle = Length\u00a0 \u00d7 Width
\n= 5cm \u00d7 4cm
\n= 20 square cm.<\/p>\n

 <\/p>\n

 <\/p>\n

Question 3.
\nUse centimeter grid paper to shade in as many rectangles as you can with the given perimeters.
\na. Use the charts below to show how many rectangles you shaded for each given perimeter. You might not use all the spaces in the charts.<\/p>\n\n\n\n\n\n\n\n\n\n
Perimeter = 10 cm
\nNumber of rectangles I made:\u00a0 _____<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 cm<\/td>\n4 cm<\/td>\n4 square cm<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n\n
Perimeter = 20 cm
\nNumber of rectangles I made:\u00a0 _____<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 cm<\/td>\n9 cm<\/td>\n9 square cm<\/td>\n<\/tr>\n
3 cm<\/td>\n7 cm<\/td>\n\u00a021 square cm<\/td>\n<\/tr>\n
4 cm<\/td>\n6 cm<\/td>\n\u00a024 square cm<\/td>\n<\/tr>\n
5 cm<\/td>\n5 cm<\/td>\n25 square cm<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

b. Did you make a square with either of the given perimeters? How do you know?
\nAnswer:
\nYes, I\u00a0 have made a square with lengths of the given perimeters of 20cm. I know it \u00a0because a rectangle with the side length all\u00a0 equal to 5cm and a rectangle with all equal sides is to be known as Square.<\/p>\n

Explanation:
\nYes, because a rectangle with side length all\u00a0 equal to 5cm and a rectangle with all equal sides is to be known as Square.<\/p>\n

 <\/p>\n

Question 4.
\nMacy and Gavin both draw rectangles with perimeters of 16 centimeters. Use words and pictures to explain how it is possible for Macy\u2019s and Gavin\u2019s rectangles to have the same perimeters but different areas.
\nAnswer:
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka
\nArea of the ABCD Macy’s rectangle = 7 Square cm.
\nPerimeter of the ABCD Macy’s rectangle = 16cms.
\nArea of the EFGH Gavin’s rectangle = 12 Square cm.
\nPerimeter of the EFGH Gavin’s rectangle = 16cms.
\nHere, Macy and Gavin has drawn two different rectangles with different lengths\u00a0 perimeters same 16cms yet different areas. Well, its possible to draw as many as rectangles with perimeters of 16 centimeters but different areas.<\/p>\n

Explanation:
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka
\nFigure1: Macy’s rectangle:
\nLength of the ABCD Macy’s rectangle = 7cm
\nWidth of the ABCD Macy’s rectangle = 1cm
\nArea of the ABCD Macy’s rectangle = Length \u00d7 Width
\n= 7cm \u00d7\u00a0 1cm
\n= 7 Square cm.
\nPerimeter of the ABCD Macy’s rectangle =\u00a0 2 ( Length + Width )
\n= 2 ( 7cm + 1cm)
\n= 2 \u00d7\u00a0 8cm
\n= 16 cms.<\/p>\n

Figure2: Gavin’s rectangle:
\nLength of the EFGH Gavin’s rectangle = 7cm
\nWidth of the EFGH Gavin’s rectangle = 1cm
\nArea of the EFGH Gavin’s rectangle = Length \u00d7 Width
\n= 6cm \u00d7\u00a0 2cm
\n= 12 Square cm.
\nPerimeter of the EFGH Gavin’s rectangle =\u00a0 2 ( Length + Width )
\n= 2 ( 6cm + 2cm)
\n= 2 \u00d7\u00a0 8cm
\n= 16 cms .<\/p>\n

 <\/p>\n

Eureka Math Grade 3 Module 7 Lesson 21 Exit Ticket Answer Key<\/h3>\n

On the grid below, shade and label at least two different rectangles with a perimeter of 20 centimeters.
\n\"Eureka
\nAnswer:
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka<\/p>\n

Explanation:
\nI have drawn three rectangles having lengths as ABCD Rectangle ( 8cm,2cm) , EFGH Rectangle\u00a0 ( 6cm,4cm)\u00a0 and IJKL Rectangle ( 7cm,3cm).<\/p>\n

 <\/p>\n

 <\/p>\n

Eureka Math Grade 3 Module 7 Lesson 21 Homework Answer Key<\/h3>\n

Question 1.
\nMargo finds as many rectangles as she can with a perimeter of 14 centimeters.
\na. Shade Margo\u2019s rectangles on the grid below. Label the length and width of each rectangle.
\n\"Eureka
\nb. Find the areas of the rectangles in part (a) above.
\nc. The perimeters of the rectangles are the same. What do you notice about the areas?
\nAnswer:
\na. \"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka<\/p>\n

b. Area of the ABCD Rectangle = 12 square cm.
\nArea of the EFGH Rectangle = 10 square cm.
\nArea of the IJKL Rectangle = 6 square cm.<\/p>\n

c. Perimeters of the three rectangles are the same having 14 cms, where as their areas are completely different from each other.<\/p>\n

Explanation:
\na.
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka<\/p>\n

b. Figure 1 : ABCD Rectangle
\nLength of the ABCD Rectangle = 4cm
\nWidth of the ABCD Rectangle = 3cm
\nArea of the ABCD Rectangle = Length\u00a0 \u00d7 Width
\n= 4cm \u00d7 3cm
\n= 12 square cm.<\/p>\n

Figure 2 : EFGH Rectangle
\nLength of the EFGH Rectangle = 5cm
\nWidth of the EFGH Rectangle = 2cm
\nArea of the EFGH Rectangle = Length\u00a0 \u00d7 Width
\n= 5cm \u00d7 2cm
\n= 10 square cm.<\/p>\n

Figure 3 : IJKL Rectangle
\nLength of the IJKL Rectangle = 6cm
\nWidth of the IJKL Rectangle = 1cm
\nArea of the IJKL Rectangle = Length\u00a0 \u00d7 Width
\n= 6cm \u00d7 1cm
\n= 6 square cm.<\/p>\n

c. Perimeter of the ABCD\u00a0 rectangle =\u00a0 2 ( Length + Width )
\n= 2 ( 4cm + 3cm)
\n= 2 \u00d7\u00a0 7cm
\n= 14 cms.<\/p>\n

Perimeter of the EFGH rectangle =\u00a0 2 ( Length + Width )
\n= 2 ( 5cm + 2cm)
\n= 2 \u00d7\u00a0 7cm
\n= 14 cms.<\/p>\n

Perimeter of the IJKL rectangle =\u00a0 2 ( Length + Width )
\n= 2 ( 6cm + 1cm)
\n= 2 \u00d7\u00a0 7cm
\n= 14 cms.
\nPerimeters of the three rectangles are the same having 14 cms, where as their areas are completely different from each other.
\nPerimeter requires only the lengths of the four sides of rectangle to be added where as for area we require length and width of the rectangle.<\/p>\n

 <\/p>\n

Question 2.
\nTanner uses unit squares to build rectangles that have a perimeter of 18 units. He creates the chart below to record his findings.
\na. Complete Tanner\u2019s chart. You might not use all the spaces in the chart.<\/p>\n\n\n\n\n\n\n\n\n\n
Perimeter = 18 units
\nNumber of rectangles I made:\u00a0 _____<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 unit<\/td>\n8 units<\/td>\n8 square units<\/td>\n<\/tr>\n
2 unit<\/td>\n\u00a07 unit<\/td>\n14 square units<\/td>\n<\/tr>\n
3 unit<\/td>\n6 unit<\/td>\n18 square units<\/td>\n<\/tr>\n
4 unit<\/td>\n5 unit<\/td>\n20 square units<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

b. Explain how you found the widths and lengths in the chart above.
\nAnswer:
\nThe chart in itself has the labelling heading of the columns as length and width and their areas.
\nIf not always length value is going to be more than the value of width in the measurements of rectangle.<\/p>\n

Explanation:
\nThe chart in itself has the labelling heading of the columns as length and width and their areas. If not always length value is going to be more than the value of width in the measurements of rectangle. This is how I found the widths and lengths in the chart above.<\/p>\n

 <\/p>\n

 <\/p>\n

Question 3.
\nJason and Dina both draw rectangles with perimeters of 12 centimeters, but their rectangles have different areas. Explain with words, pictures, and numbers how this is possible.
\nAnswer:
\n\"Engage-NY-Eureka-Math-3rd-Grade-Module-7-Lesson-21-Answer-Key-Eureka
\nArea of the Jason’s ABCD Rectangle = 8 square cm.
\nPerimeter of the Jason’s ABCD Rectangle = 12 cm.
\nArea of the Dina’s EFGH Rectangle = 5 square cm.
\nPerimeter of the Dina’s EFGH Rectangle = 12 cm.
\nPerimeter requires only the lengths of the four sides of rectangle to be added where as for area we require length and width of the rectangle. Jason’s ABCD rectangle and Dina’s EFGH rectangle are having same perimeter yet different areas.<\/p>\n

Explanation:
\nJason’s ABCD Rectangle:
\nLength of the Jason’s ABCD Rectangle = 4cm
\nWidth of the Jason’s ABCD Rectangle = 2cm
\nArea of the Jason’s ABCD Rectangle = Length \u00d7 Width
\n= 4cm \u00d7\u00a0 2cm
\n= 8 square cm.
\nPerimeter of the Jason’s ABCD Rectangle = 2 ( Length + Width )
\n= 2 ( 4cm + 2cm )
\n= 2 \u00d7 6cm
\n= 12 cm.<\/p>\n

Dina’s EFGH Rectangle:
\nLength of the Dina’s EFGH Rectangle = 5cm
\nWidth of the Dina’s EFGH Rectangle = 1cm
\nArea of the Dina’s EFGH Rectangle = Length \u00d7 Width
\n= 5cm \u00d7\u00a0 1cm
\n= 5 square cm.
\nPerimeter of the Dina’s EFGH Rectangle = 2 ( Length + Width )
\n= 2 ( 5cm + 1cm )
\n= 2 \u00d7 6cm
\n= 12 cm.
\nJason’s ABCD rectangle and Dina’s EFGH rectangle are having same perimeter yet different areas.<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

Eureka Math Grade 3 Module 7 Lesson 21 Data Sheet Answer Key<\/strong><\/p>\n

Use the data you gathered from Problem Sets 20 and 21 to complete the charts to show how many rectangles you can create with a given perimeter. You might not use all the spaces in the charts.<\/p>\n\n\n\n\n\n\n\n\n
Perimeter = 10 units
\nNumber of rectangles you made:\u00a0 _1____<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 unit<\/td>\n4 units<\/td>\n4 square units<\/td>\n<\/tr>\n
2 units<\/td>\n3 units<\/td>\n6 square units<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n
Perimeter = 12 units
\nNumber of rectangles you made:\u00a0 _2____<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 unit<\/td>\n5 units<\/td>\n5 square units<\/td>\n<\/tr>\n
2 units<\/td>\n4 units<\/td>\n8 square units<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n
Perimeter = 14 units
\nNumber of rectangles you made:\u00a0 __3___<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 unit<\/td>\n6 units<\/td>\n6 square units<\/td>\n<\/tr>\n
2 units<\/td>\n5 units<\/td>\n10 square units<\/td>\n<\/tr>\n
3 units<\/td>\n4 units<\/td>\n12 square units<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n
Perimeter = 16 units
\nNumber of rectangles you made:\u00a0 __4___<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 unit<\/td>\n7 units<\/td>\n7 square units<\/td>\n<\/tr>\n
2 units<\/td>\n6 units<\/td>\n12 square units<\/td>\n<\/tr>\n
3 units<\/td>\n5 units<\/td>\n15 square units<\/td>\n<\/tr>\n
4 units<\/td>\n4 units<\/td>\n16 square units<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n\n
Perimeter = 18 units
\nNumber of rectangles you made:\u00a0 _4____<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
1 unit<\/td>\n8 units<\/td>\n8 square units<\/td>\n<\/tr>\n
2 units<\/td>\n7 units<\/td>\n14 square units<\/td>\n<\/tr>\n
3 units<\/td>\n6 units<\/td>\n18 square units<\/td>\n<\/tr>\n
4 units<\/td>\n5 units<\/td>\n20 square units<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n\n
Perimeter = 20 units
\nNumber of rectangles you made:\u00a0 __3___<\/td>\n<\/tr>\n
Width<\/td>\nLength<\/td>\nArea<\/td>\n<\/tr>\n
2 units<\/td>\n8 units<\/td>\n16 square units<\/td>\n<\/tr>\n
4 units<\/td>\n6 units<\/td>\n24 square units<\/td>\n<\/tr>\n
3 units<\/td>\n7 units<\/td>\n21 square units<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Engage NY Eureka Math 3rd Grade Module 7 Lesson 21 Answer Key Eureka Math Grade 3 Module 7 Lesson 21 Sprint Answer Key A Multiply or Divide by 3 Answer: Question 1. 2 \u00d7 3 = Answer: 2 \u00d7 3 = 6. Question 2. 3 \u00d7 3 = Answer: 3 \u00d7 3 = 9. Question … Read more<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[6],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/56231"}],"collection":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/comments?post=56231"}],"version-history":[{"count":1,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/56231\/revisions"}],"predecessor-version":[{"id":92433,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/posts\/56231\/revisions\/92433"}],"wp:attachment":[{"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/media?parent=56231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/categories?post=56231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bigideasmathanswers.com\/wp-json\/wp\/v2\/tags?post=56231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}