Eureka Math

Engage NY Eureka Math 3rd Grade Module 7 Lesson 20 Answer Key

Eureka Math Grade 3 Module 7 Lesson 20 Sprint Answer Key

A
Multiply or Divide by 2

Answer:

Question 1.
2 × 2 =
Answer:
2 × 2 = 4.

Question 2.
3 × 2 =
Answer:
3 × 2 = 6.

Question 3.
4 × 2 =
Answer:
4 × 2 = 8.

Question 4.
5 × 2 =
Answer:
5 × 2 = 10.

Question 5.
1 × 2 =
Answer:
1 × 2 = 2.

Question 6.
4 ÷ 2 =
Answer:
4 ÷ 2 = 2.

Question 7.
6 ÷ 2 =
Answer:
6 ÷ 2 = 3.

Question 8.
10 ÷ 2 =
Answer:
10 ÷ 2 = 5.

Question 9.
2 ÷ 1 =
Answer:
2 ÷ 1 = 2.

Question 10.
8 ÷ 2 =
Answer:
8 ÷ 2 = 4.

Question 11.
6 × 2 =
Answer:
6 × 2 = 12.

Question 12.
7 × 2 =
Answer:
7 × 2 = 14.

Question 13.
8 × 2 =
Answer:
8 × 2 = 16.

Question 14.
9 × 2 =
Answer:
9 × 2 = 18.

Question 15.
10 × 2 =
Answer:
10 × 2 = 20.

Question 16.
16 ÷ 2 =
Answer:
16 ÷ 2 = 8.

Question 17.
14 ÷ 2 =
Answer:
14 ÷ 2 = 7.

Question 18.
18 ÷ 2 =
Answer:
18 ÷ 2 = 9.

Question 19.
12 ÷ 2 =
Answer:
12 ÷ 2 = 6.

Question 20.
20 ÷ 2 =
Answer:
20 ÷ 2 = 10.

Question 21.
___ × 2 = 10
Answer:
_5__ × 2 = 10.

Question 22.
___ × 2 = 12
Answer:
_6__ × 2 = 12.

Question 23.
___ × 2 = 20
Answer:
_10__ × 2 = 20.

Question 24.
___ × 2 = 4
Answer:
_2__ × 2 = 4.

Question 25.
___ × 2 = 6
Answer:
__3_ × 2 = 6.

Question 26.
20 ÷ 2 =
Answer:
20 ÷ 2 = 10.

Question 27.
10 ÷ 2 =
Answer:
10 ÷ 2 = 5.

Question 28.
2 ÷ 1 =
Answer:
2 ÷ 1 = 2.

Question 29.
4 ÷ 2 =
Answer:
4 ÷ 2 = 2.

Question 30.
6 ÷ 2 =
Answer:
6 ÷ 2 = 3.

Question 31.
___ × 2 = 12
Answer:
_6__ × 2 = 12.

Question 32.
___ × 2 = 14
Answer:
_7__ × 2 = 14.

Question 33.
___ × 2 = 18
Answer:
_9__ × 2 = 18.

Question 34.
___ × 2 = 16
Answer:
_8__ × 2 = 16.

Question 35.
14 ÷ 2 =
Answer:
14 ÷ 2 = 7.

Question 36.
18 ÷ 2 =
Answer:
18 ÷ 2 = 9.

Question 37.
12 ÷ 2 =
Answer:
12 ÷ 2 = 6.

Question 38.
16 ÷ 2 =
Answer:
16 ÷ 2 = 8.

Question 39.
11 × 2 =
Answer:
11 × 2 = 22.

Question 40.
22 ÷ 2 =
Answer:
22 ÷ 2 = 11.

Question 41.
12 × 2 =
Answer:
12 × 2 = 24.

Question 42.
24 ÷ 2 =
Answer:
24 ÷ 2 = 12.

Question 43.
14 × 2 =
Answer:
14 × 2 = 28.

Question 44.
28 ÷ 2 =
Answer:
28 ÷ 2 = 14.

 

B
Multiply or Divide by 2

Answer:

Question 1.
1 × 2 =
Answer:
1 × 2 = 2.

Question 2.
2 × 2 =
Answer:
2 × 2 = 4.

Question 3.
3 × 2 =
Answer:
3 × 2 = 6.

Question 4.
4 × 2 =
Answer:
4 × 2 = 8.

Question 5.
5 × 2 =
Answer:
5 × 2 = 10.

Question 6.
6 ÷ 2 =
Answer:
6 ÷ 2 = 3.

Question 7.
4 ÷ 2 =
Answer:
4 ÷ 2 = 2.

Question 8.
8 ÷ 2 =
Answer:
8 ÷ 2 = 4.

Question 9.
2 ÷ 1 =
Answer:
2 ÷ 1 = 2.

Question 10.
10 ÷ 2 =
Answer:
10 ÷ 2 = 5.

Question 11.
10 × 2 =
Answer:
10 × 2 = 20.

Question 12.
6 × 2 =
Answer:
6 × 2 = 12.

Question 13.
7 × 2 =
Answer:
7 × 2 = 14.

Question 14.
8 × 2 =
Answer:
8 × 2 = 16.

Question 15.
9 × 2 =
Answer:
9 × 2 = 18.

Question 16.
14 ÷ 2 =
Answer:
14 ÷ 2 = 7.

Question 17.
12 ÷ 2 =
Answer:
12 ÷ 2 = 6.

Question 18.
16 ÷ 2 =
Answer:
16 ÷ 2 = 8.

Question 19.
20 ÷ 2 =
Answer:
20 ÷ 2 = 10.

Question 20.
18 ÷ 2 =
Answer:
18 ÷ 2 = 9.

Question 21.
___ × 2 = 12
Answer:
_6__ × 2 = 12.

Question 22.
___ × 2 = 10
Answer:
_5__ × 2 = 10.

Question 23.
___ × 2 = 4
Answer:
_2__ × 2 = 4.

Question 24.
___ × 2 = 20
Answer:
_10__ × 2 = 20.

Question 25.
___ × 2 = 6
Answer:
_3__ × 2 = 6.

Question 26.
4 ÷ 2 =
Answer:
4 ÷ 2 = 2.

Question 27.
2 ÷ 1 =
Answer:
2 ÷ 1 = 2.

Question 28.
20 ÷ 2 =
Answer:
20 ÷ 2 = 10.

Question 29.
10 ÷ 2 =
Answer:
10 ÷ 2 = 5.

Question 30.
6 ÷ 2 =
Answer:
6 ÷ 2 = 3.

Question 31.
___ × 2 = 12
Answer:
_6__ × 2 = 12.

Question 32.
___ × 2 = 16
Answer:
_8__ × 2 = 16.

Question 33.
___ × 2 = 18
Answer:
_9__ × 2 = 18.

Question 34.
___ × 2 = 14
Answer:
_7__ × 2 = 14.

Question 35.
16 ÷ 2 =
Answer:
16 ÷ 2 = 8.

Question 36.
18 ÷ 2 =
Answer:
18 ÷ 2 = 9.

Question 37.
12 ÷ 2 =
Answer:
12 ÷ 2 = 6.

Question 38.
14 ÷ 2 =
Answer:
14 ÷ 2 = 7.

Question 39.
11 × 2 =
Answer:
11 × 2 = 22.

Question 40.
22 ÷ 2 =
Answer:
22 ÷ 2 = 11.

Question 41.
12 × 2 =
Answer:
12 × 2 = 24.

Question 42.
24 ÷ 2 =
Answer:
24 ÷ 2 = 12.

Question 43.
13 × 2 =
Answer:
13 × 2 = 26.

Question 44.
26 ÷ 2 =
Answer:
26 ÷ 2 = 13.

Eureka Math Grade 3 Module 7 Lesson 20 Problem Set Answer Key

Question 1.
Use your square unit tiles to build as many rectangles as you can with a perimeter of 12 units.
a. Estimate to draw your rectangles below. Label the side lengths of each rectangle.
b. Explain your strategy for finding rectangles with a perimeter of 12 units.
c. Find the areas of all the rectangles in part (a) above.
d. The perimeters of all the rectangles are the same. What do you notice about their areas?
Answer:
a.

b. Well, I have choose the multiples of 12 to draw the rectangles. Perimeter of the rectangles = 12units.

c. Area of the ABCD rectangle = 12 square units.
Area of the EFGH rectangle = 12 square units.
Area of the IJKL rectangle = 12 square units.

d. Perimeter of ABCD Rectangle = 16units.
Perimeter of EFGH Rectangle = 14units.
Perimeter of IJKL Rectangle = 26units.
Well, areas of all rectangles are same yet their perimeters are completely different to one and the another rectangle.

 

Explanation:
a.

b. Perimeter of the rectangles = 12units.
Well, I have choose the multiples of 12 to draw the rectangles.

c.
Figure 1: ABCD Rectangle:
Length of the ABCD rectangle = 6units
Width of the ABCD rectangle = 2units
Area of the ABCD rectangle = Length × Width
= 6units × 2units
= 12 square units.

Figure 2: EFGH Rectangle:
Length of the EFGH rectangle = 4units
Width of the EFGH rectangle = 3units
Area of the EFGH rectangle = Length × Width
= 4units × 3units
= 12 square units.

Figure 3: IJKL Rectangle:
Length of the IJKL rectangle = 12units
Width of the IJKL rectangle = 1units
Area of the IJKL rectangle = Length × Width
= 12units × 1units
= 12 square units.

d.
Figure 1: ABCD Rectangle:
Length of the ABCD rectangle = 6units
Width of the ABCD rectangle = 2units
Perimeter of ABCD Rectangle = 2 ( Length + Width  )
= 2 ( 6units + 2units )
= 2 × 8units
= 16 units.

Figure 2: EFGH Rectangle:
Length of the EFGH rectangle = 4units
Width of the EFGH rectangle = 3units
Perimeter of EFGH Rectangle = 2 ( Length + Width  )
= 2 ( 4units + 3units )
= 2 × 7units
= 14 units.

Figure 3: IJKL Rectangle:
Length of the IJKL rectangle = 12units
Width of the IJKL rectangle = 1units
Perimeter of IJKL Rectangle = 2 ( Length + Width  )
= 2 ( 12units + 1units )
= 2 × 13units
= 26 units.
Well, areas of all rectangles are same yet their perimeters are completely different to one and the another rectangle.

 

Question 2.
Use your square unit tiles to build as many rectangles as you can with a perimeter of 14 units.
a. Estimate to draw your rectangles below. Label the side lengths of each rectangle.
b. Find the areas of all the rectangles in part (a) above.
c. Given a rectangle’s perimeter, what other information do you need to know about the rectangle to find its area?
Answer:
a.
b. Area of the ABCD rectangle = 30 square units.
Area of the EFGH rectangle = 18 square units.

c.  Perimeter of any figure is basically gives the length of the figure. Area of rectangle is the region covered by the rectangle in a two-dimensional plane. Area requires length and width for its calculation.

 

Explanation:
a.

b. Figure 1 : ABCD Rectangle:
Length of the ABCD rectangle = 14units
Width of the ABCD rectangle = 1unit
Area of the ABCD rectangle =  Length × Width
= 14units × 1units
= 14 square units.

Figure 2 :EFGH Rectangle:
Length of the EFGH rectangle = 7units
Width of the EFGH rectangle = 2unit
Area of the EFGH rectangle = Length × Width
=  7units × 2units
= 14 square units.

c. Perimeter of any figure is basically gives the length of the figure. Area of rectangle is the region covered by the rectangle in a two-dimensional plane. Area requires length and width for its calculation.

 

Eureka Math Grade 3 Module 7 Lesson 20 Exit Ticket Answer Key

Use your square unit tiles to build as many rectangles as you can with a perimeter of 8 units.
a. Estimate to draw your rectangles below. Label the side lengths of each rectangle.
b. Find the areas of the rectangles in part (a) above.
Answer:
a.

b. Area of the ABCD rectangle = 8 square units.
Area of the EFGH rectangle = 8 square units.

Explanation:
a.

b. Figure 1  : ABCD Rectangle:
Length of the ABCD rectangle = 4units
Width of the ABCD rectangle = 2unit
Area of the ABCD rectangle = Length × Width
=  4units × 2units
= 8 square units.

Figure 2 : EFGH Rectangle:
Length of the EFGH rectangle = 8units
Width of the EFGH rectangle = 1unit
Area of the EFGH rectangle = Length × Width
=  8units × 1units
= 8 square units.

 

Eureka Math Grade 3 Module 7 Lesson 20 Homework Answer Key

Question 1.
Cut out the unit squares at the bottom of the page. Then, use them to make as many rectangles as you can with a perimeter of 10 units.
a. Estimate to draw your rectangles below. Label the side lengths of each rectangle.
b. Find the areas of the rectangles in part (a) above.

Answer:
a.

b. Area of the ABCD rectangle = 10 square units.
Area of the EFGH rectangle = 10 square units.

Explanation:
a.

b. Figure 1  : ABCD Rectangle:
Length of the ABCD rectangle = 10units
Width of the ABCD rectangle = 1unit
Area of the ABCD rectangle =  Length × Width
= 10units × 1units
= 10 square units.

Figure 2: EFGH Rectangle:
Length of the EFGH rectangle = 5units
Width of the EFGH rectangle = 2units
Area of the EFGH rectangle = Length × Width
= 5units × 2units
= 10 square units.

 

Question 2.
Gino uses unit square tiles to make rectangles with a perimeter of 14 units. He draws his rectangles as shown below. Using square unit tiles, can Gino make another rectangle that has a perimeter of 14 units? Explain your answer.

Answer:

Perimeter of ABCD Rectangle = 14units.
Perimeter of EFGH Rectangle = 14units.

Explanation:

Figure 1: ABCD Rectangle
Length of the ABCD Rectangle = 6units
Width of the ABCD Rectangle = 1units
Perimeter of ABCD Rectangle = 2 (Length + Width)
= 2 ( 6units + 1unit )
= 2 × 7units
= 14units.

Figure 2: EFGH Rectangle
Length of the EFGH Rectangle = 4units
Width of the EFGH Rectangle = 3units
Perimeter of EFGH Rectangle = 2 (Length + Width)
= 2 ( 4units + 3unit )
= 2 × 7units
= 14units.

 

Question 3.
Katie draws a square that has a perimeter of 20 centimeters.
a. Estimate to draw Katie’s square below. Label the length and width of the square.
b. Find the area of Katie’s square.
c. Estimate to draw a different rectangle that has the same perimeter as Katie’s square.
d. Which shape has a greater area, Katie’s square or your rectangle?
Answer:
a.
b. Area of the ABCD Katie’s Square = 25 square units.

c.

Perimeter of the EFGH Rectangle = 20units.

d. Area of the ABCD Katie’s Square = 25 square units.
Area of the EFGH Rectangle = 24 square units.
Area of the ABCD Katie’s Square is greater than the Area of the EFGH Rectangle.

Explanation:
a.
b.  Length of the side of the ABCD Katie’s Square = 5units
Area of the ABCD Katie’s Square = Side × Side
= 5units × 5units
= 25 square units.

c.
Length of the EFGH Rectangle = 6units
Width of the EFGH Rectangle = 4units
Perimeter of the EFGH Rectangle = 2 ( Length + Width )
= 2 ( 6units + 4units )
= 2 × 10units
= 20units.

d. Length of the side of the ABCD Katie’s Square = 5units
Area of the ABCD Katie’s Square = Side × Side
= 5units × 5units
= 25 square units.

Length of the EFGH Rectangle = 6units
Width of the EFGH Rectangle = 4units
Area of the EFGH Rectangle = Length × Width
= 6units × 4units
= 24 square units.

 

Eureka Math Grade 3 Module 7 Lesson 20 Data Sheet Answer Key

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.

Perimeter = 10 units Number of rectangles you made:  _2____
Width	Length	Area
1 unit	10 units	10 square units
2 unit	5 units	10 square units

Perimeter = 12 units Number of rectangles you made:  __3___
Width	Length	Area
1 units	12 units	12 square units
2 units	6 units	12 square units
3 units	4 units	12 square units

Perimeter = 14 units Number of rectangles you made:  _2____
Width	Length	Area
1 units	14 units	14 square units
2 units	7 units	14 square units

Perimeter = 16 units Number of rectangles you made:  _2____
Width	Length	Area
1 unit	16 units	16 square units
2 units	8 units	16 square units

Perimeter = 18 units Number of rectangles you made:  _2____
Width	Length	Area
1 unit	18 units	18 square units
2 units	9 units	18 square units

Perimeter = 20 units Number of rectangles you made:  __2___
Width	Length	Area
1 unit	20 units	20 square units
2 units	10 units	20 square units

Engage NY Eureka Math 3rd Grade Module 1 Lesson 16 Answer Key

Eureka Math Grade 3 Module 1 Answer Key

Eureka Math Grade 3 Module 1 Lesson 16 Pattern Sheet Answer Key

Multiply.

multiply by 4 (6–10)


Explanation:
Multiplied by 4 (6–10) as shown above.

Eureka Math Grade 3 Module 1 Lesson 16 Problem Set Answer Key

Question 1.
Label the array. Then, fill in the blanks below to make true number sentences.

6 x 4 = 24

Explanation:
Labeled the array and filled the blanks to make true
number sentences as (6 X 4) = (5 X 4) + (1 X 4) =
20 + 4 = 24.  6 X 4 we write as ((5 + 1 ) X 4).
So 6 X 4 = 24.

7 X 4 = 28,

Explanation:
Labeled the array and filled the blanks to make true
number sentences as (7 X 4) = (5 X 4) + (2 X 4) =
20 + 8 = 28. 7 X 4 we write as ((5 + 2) X 4).
So, 7 X 4 = 28.

8 X 4 = 32,

Explanation:
Labeled the array and filled the blanks to make true
number sentences as (8 X 4) = (5 X 4) + (3 X 4) =
20 + 12 = 32. 8 X 4 we write as ((5 + 3) X 4).
So, 8 X 4 = 32.

9 X 4 = 36,

Explanation:
Labeled the array and filled the blanks to make true
number sentences as (9 X 4) = (5 X 4) + (4 X 4) =
20 + 16 = 36. 9 X 4 we write as ((5 + 4) X 4).
So, 9 X 4 = 36.

Question 2.
Match the equal expressions.

Explanation:
Matched the equal expressions as
(5 X 4) + (3 X 4) = (5 + 3) X 4 = 8 X 4 = 32,
(5 X 4) + (1 X 4) = (5 + 1) X 4 = 6 X 4 = 24,
(5 X 4) + (4 X 4) = (5 + 4) X 4 = 9 X 4 = 36,
(5 X 4) + (2 X 4) = (5 + 2) X 4 = 7 X 4 = 28.

Question 3.
Nolan draws the array below to find the answer to the
multiplication expression 10 × 4. He says, “10 × 4 is just
double 5 × 4.” Explain Nolan’s strategy.

Nolan’s strategy is 10 X 4 = 2 X (5 X 4) = 2 X 20 = 40,
or 10 X 4 = 40,

Explanation:
Given Nolan draws the array  to find the answer to the
multiplication expression 10 × 4. Nolan says, “10 × 4 is just
double 5 × 4.” Nolan’s strategy is 10 X 4 = 2 X (5 X 4) =
2 X 20 = 40 is same as 10 X 4 = 40.
So, “10 × 4 is just double 5 × 4.”

Eureka Math Grade 3 Module 1 Lesson 16 Exit Ticket Answer Key

Destiny says, “I can use 5 × 4 to find the answer to 7 × 4.”
Use the array below to explain Destiny’s strategy using words and numbers.

Explanation:
Given Destiny says, “I can use 5 × 4 to find the answer to 7 × 4.”
Used the array to explain Destiny’s strategy using words and numbers
as to find 7 X 4 we write 7 as (5 + 2) and multiply with 4 as
(5 + 2) X 4 = (5 X 4) + (2 X 4) = 20 + 8 = 28, So we used 5 X 4 to
find the answer for 7 X 4.

Eureka Math Grade 3 Module 1 Lesson 16 Homework Answer Key

Question 1.
Label the array. Then, fill in the blanks below to make true number sentences.


Explanation:
Labeled the array and filled in the blanks to make true
number sentences as 6 X 4 = (5 X 4) + (1 X 4) = 20 + 4 = 24,
or 6 X 4 = 24.

Explanation:
Labeled the array and filled in the blanks to make true
number sentences as 8 X 4 = (5 X 4) + (3 X 4) = 20 + 12 = 32,
or 8 X 4 = 32.

Question 2.
Match the multiplication expressions with their answers.

Explanation:
Matched the multiplication expressions with their answers as
4 X 6 = 24,
4 X 7 = 28,
4 X 8 = 32,
4 X 9 = 36.

Question 3.
The array below shows one strategy for solving 9 × 4.
Explain the strategy using your own words.

Explanation:
Given the array shown one strategy for solving 9 × 4.
The strategy used is 9 X 4 = (5 X 4) + (4 X 4) = 20 + 16 = 36,
9 X 4 = 36.

Engage NY Eureka Math 3rd Grade Module 1 Lesson 15 Answer Key

Eureka Math Grade 3 Module 1 Answer Key

Eureka Math Grade 3 Module 1 Lesson 15 Pattern Sheet Answer Key

Multiply.

multiply by 4 (1–5)


Explanation:
Multiply by 4 (1–5) the expression as shown above.

Eureka Math Grade 3 Module 1 Lesson 15 Problem Set Answer Key

Question 1.
Label the tape diagrams and complete the equations. Then,
draw an array to represent the problems.


Explanation:
Labeled the tape diagram and completed the equations,
Drawn an array to represent the problems as
2 X 4 = 8, 4 X 2 = 8.

Explanation:
Labeled the tape diagram and completed the equations,
Drawn an array to represent the problems as
3 X 4 = 12, 4 X 3 = 12.

Explanation:
Labeled the tape diagram and completed the equations,
Drawn an array to represent the problems as
7 X 4 = 28, 4 X 7 = 28.

Question 2.
Draw and label 2 tape diagrams to model why the statement in the box is true.

Statement in the box is true,

Explanation:
Drawn and labeled 2 tape diagrams to model the statement
in the box is true because as  4 X 6 = 24 and 6 X 4 = 24,
both has result value as 24, So the statement is true.

Question 3.
Grace picks 4 flowers from her garden. Each flower has 8 petals.
Draw and label a tape diagram to show how many petals
there are in total.

In total there are 32 petals,

Explanation:
Given Grace picks 4 flowers from her garden and each
flower has 8 petals. Drawn and labeled a tape diagram as
shown above total number of petals are 4 X 8 = 32 petals
are there in total.

Question 4.
Michael counts 8 chairs in his dining room. Each chair has 4 legs.
How many chair legs are there altogether?

There are 32 chair legs altogether,

Explanation:
Given Michael counts 8 chairs in his dining room and each
chair has 4 legs, So number of chair legs altogether are
8 X 4 = 32, therefore, there are 32 chair legs altogether.

Eureka Math Grade 3 Module 1 Lesson 15 Exit Ticket Answer Key

Draw and label 2 tape diagrams to show that 4 × 3 = 3 × 4.
Use your diagrams to explain how you know the statement is true.

Shown 4 X 3 = 3 X 4 as
4 cups X 3 cups = 12 cups,
3 cups x 4 cups = 12 cups,

Explanation:
Drawn and labeled 2 tape diagrams to show that 4 × 3 = 3 × 4
Used cups to explain the statement is true as
taken 4 boxes of 3 cups each and 3 boxes of
4 cups each so that 4 X 3 = 3 X 4,
both results values are same 12.

Eureka Math Grade 3 Module 1 Lesson 15 Homework Answer Key

Question 1.
Label the tape diagrams and complete the equations.
Then, draw an array to represent the problems.


Explanation:
Labeled the tape diagrams and completed the equations as
4 X 3 = 12, 3 x 4 = 12 and drawn an array of  4 x 3 to represent the problems
as shown above in the picture.

Explanation:
Labeled the tape diagrams and completed the equations as
4 X 9 = 36, 9 x 4 = 36 and drawn an array of  4 X 9, 9 X 4 to
represent the problems as shown above in the picture.

Explanation:
Labeled the tape diagrams and completed the equations as
6 X 4 = 24, 4 x 6 = 24 and drawn an array of  6 X 4, 4 X 6 to
represent the problems as shown above in the picture.

Question 2.
Seven clowns hold 4 balloons each at the fair.
Draw and label a tape diagram to show the total
number of balloons the clowns hold.

The total number of balloons the clowns hold are 28,

Explanation:
Given seven clowns hold 4 balloons each at the fair.
Drawn and labeled a tape diagram to show the total
number of balloons the clowns hold as 7 X 4 = 28 balloons.

Question 3.
George swims 7 laps in the pool each day.
How many laps does George swim after 4 days?

George swims 28 laps after 4 days.

Explanation:
Given George swims 7 laps in the pool each day,
So number of laps George swims after 4 days are
7 X 4 =28 laps.