# enVision Math Common Core Grade 1 Answer Key Topic 13 Time and Money

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## enVision Math Common Core 1st Grade Answers Key Topic 13 Time and Money

Essential Question:
What are the values of coins, and what are some different ways to tell time?
Musical instruments can make many different sounds.
Almost all of these sounds are made when some part of the instrument vibrates.

The Sound of Vibration
Find Out Talk to friends and relatives about the sounds that different musical instruments make. Ask them if they know what part of the instrument vibrates to make the sound.

Journal: Make a Book Show what you found out. In your book, also:

• Draw pictures of different musical instruments.
• Circle or highlight the part of the instrument that

Review What You Know
Vocabulary

Question 1.
Count to find the missing numbers. 28, 29, __, __, 32, __, 34, __

28, 29, 30, 31, 32, 33, 34, 35

Question 2.
Circle the number in the ones place.
1 2

Question 3.
Write the missing numbers to complete the pattern.

Counting
Question 4.
Count by 1 s to write the missing numbers. 47, 48, __, __, __, 52, 53, __

47, 48, 49, 50, 51, 52, 53, 54

Question 5.
Count by 10s to write the missing numbers. __, 20, 30, __, __, __

10, 20, 30, 40, 50, 60

Use Tools to Count
Question 6.
Use what you know about counting on a hundred chart to fill in the missing numbers.

Pick a Project

PROJECT 13A
What are your favorite library books?

PROJECT 13B
Where did all these coins come from? Project:
Make a Coin Poster

PROJECT 13C
Would you like to work in a store?
Project: Play Store

3-ACT MATH PREVIEW

Math Modeling
Drip Dry

I can model with math to solve a problem about time and measurement.

### Lesson 13-1 Tell the Value of Coins

Solve & Share
Jennifer has 8 coins. She wants to share them with her friend. She says, “We each get 4 coins like this.” Do you think this is a fair way to share the coins? Explain.

I can … Identify coins and tell their value.

No, this Is Not the fair way to share the coins because,

1 nickel = 5 cents

So, 4 nickels = 4 x 5 = 20 cents

1 dime = 10 cents

So, 4 dimes = 4 x 10 = 40 cents

Therefore, it is not the correct way to share the coins.

Visual Learning Bridge

Convince Me! Look at the penny and the nickel. Write 2 ways they are alike. Then write 2 ways they are different.

Guided Practice

Write the name of the coin. Then tell its value and how many are in a dollar.
Question 1.

Name of the Coin = Dime

Value = 10 cents

How many in A dollar = 10

Question 2.

Name of the coin = Penny

Value = 1 cent

How Many in a dollar = 100

Independent Practice

Circle the coins. Then complete the sentences.
Question 3.
Circle every quarter.

A quarter is worth _______ ¢.
There are _______ quarters in a dollar.

1 quarter = 25 cents.

$1 = 100 cents 4 quarter = 100 cents Therefore, There are 4 quarters in a dollar. Question 4. Circle every coin with a value of 5¢. А _______ is worth 5¢. How many in a dollar? _______ Answer: A nickel is worth 5¢ 1 Dollar = 100 cents 20 nickels = 5 x 20 = 100 cents Therefore, 20 nickels = 100 cents. Question 5. Mark has 6 dimes. How many more dimes does he need in order to have 1 dollar? _______ more dimes Answer: 1 dime = 10 cents So, 6 dimes = 6 x 10 = 60 cents$1 = 100 cents

100 – 60 = 40

40 cents = 4 dimes

Therefore, Mark need 4 more dimes.

Question 6.
Higher Order Thinking Beth has a stack of nickels worth 1 dollar. She also has a stack of quarters worth 1 dollar. How many coins does she have in all? _______ coins in all

$1 = 100 cents 1 nickel = 5 cents 20 nickels = 1 dollar 1 quarter = 25 cents 4 quarters = 1 dollar Now, 20 nickels + 4 quarters = 24 coins Therefore, 24 Coins are there in all. Problem Solving Solve the problems below. Question 7. Draw lines to show which coins go in which bank. Answer: Question 8. Higher Order Thinking Jake has a dollar’s worth of dimes. Henry has a dollar’s worth of nickels. Who has more coins? How many more? Answer:$1 = 100 cents

1 dime = 10 cents

So, 10 dimes = 1 dollar

1 nickel = 5 cents

So, 20 Nickels = $1 Therefore, Henry has more coins than Jake. Henry Has 10 coins more. Question 9. Number Sense Solve the riddle. I am a coin that is worth more than a nickel and less than a quarter. What coin am I? Answer: Dime Explanation: 1 nickel = 5 cents 1 Quarter = 25 cents 1 dime = 10 cents Therefore, Dime coin worth more than a nickel and less than a quarter. Question 10. Explain Kate wants to buy a bottle of juice. It costs a dollar. Kate has 3 quarters. How many more quarters does she need? Answer: Kate Need 1 quarter To buy a bottle of juice.$1 = 100 cents

1 quarter = 25 cents

Which means, 3 quarters = 25+25+25 = 75

Now, 100 – 75 = 25

Therefore, Kate Need 1 Quarter To buy a bottle of juice.

Question 11.
Assessment Practice which coins have the same value as a dollar? Choose two that apply.
☐ 50 dimes
☐ 20 nickels
☐ 100 pennies
☐ 10 quarters

1 dollar = 100 cents

1 Nickel = 5 cents

Which means, 20 Nickels = 20 x 5 = 100 cents

1 penny = 1 cent

Which means, 100 pennies = 100 cents

Therefore The answer is 20 Nickels and 100 pennies.

### Lesson 13.2 Find the Value of a Group of Coins

Solve & Share
Julia has dime and 2 pennies. How many pop beads can she buy? Use words or pictures to explain how you know.

I can … find the value of a group of coins.

Given That Julia Have 1 Dime And 2 Pennies

1 Dime = 10 Cents

And 2 pennies = 2 Cents

Total = 10¢ + 2¢ = 12¢

Also Given That, The Cost Of Pop Beads = 1¢

Visual Learning Bridge

Convince Me! How is counting dimes and pennies like counting by tens and counting by ones?

Guided Practice

Count on. Then write how much money in all.
Question 1.

1 Dime = 10 Cents

So, 6 Dimes = 10 + 10 + 10 + 10 +10 + 10 = 60¢

Therefore, There are 60¢ In All.

Question 2.

1 Dime = 10 Cents

So, 2 Dimes = 10 + 10 = 20¢

1 penny = 1 cent

So, 3 Pennies = 3 cents

Total : 20¢ +3¢ = 23¢

Therefore There are 23¢ in all.

Independent Practice

Count on. Then write how much in all.
Question 3.

1 penny = 1 cent

So, 5 pennies = 5 Cents
Therefore, there are 5 Cents in all.

Question 4.

1 Dime = 10 Cents

So, 3 Dimes = 10 + 10 + 10 = 30¢

1 penny = 1 cent

So, 3 pennies = 3¢

Total : 30¢ + 3¢ = 33¢

Therefore, There are 33¢ In All.

Question 5.

1 Dime = 1 Cents

So, 3 Dimes = 10 + 10+ 10 = 30¢

1 penny = 1 cent

Total : 30¢ + 1¢ = 31¢

Therefore, There Are 31¢ In All.

Question 6.
Higher-Order Thinking Find the total value of the coins.

I Will Count Dimes First Because It Will Be Easy While Calculating The Total.

1 Dime = 10 Cents

So, 7 Dimes = 10 + 10 + 10 + 10 + 10 + 10 + 10 = 70¢

1 penny = 1 cent

So, 5 Pennies = 5¢

Total : 70¢ + 5¢ = 75¢

Therefore, The value Of The Coins = 75¢

Problem Solving

Solve each problem below.
Question 7.
Sally has 45¢. She has dimes and pennies. Draw a picture to show the coins Sally could have.

45¢ Can Be Shown In Dimes And Pennies As

4 Dimes And 5 pennies.

1 dime = 10 cents

So, 4 Dimes = 10+ 10+ 10+ 10 = 40¢

1 penny = 1 cent

So, 5 pennies = 5¢

Total: 40¢ + 5¢ = 45¢

Question 8.
Be Precise Jack has 5 dimes and 17 pennies. How many cents does Jack have?

1 Dime = 10 Cents

So, 5 Dime = 10+ 10 +10 + 10 + 10 = 50¢

1 penny = 1 cent

So, 17 Pennies = 17¢

Total : 50¢ + 17¢ = 67¢

Therefore, Jack Have 67¢

Question 9.
Higher-Order Thinking Tom has 4 dimes. He wants to buy the marker. How many more cents does he need?

Given That Tom Have 4 dimes.

1 Dime = 10 Cents

So, 4 Dimes = 10 + 10 + 10 + 10 = 40¢

Tom Has 40 Cents.

The Cost Of The Marker 54¢

Now, 54¢ – 40¢ = 14¢

Therefore, Tom Need 14¢ To Buy The Marker.

Question 10.
Assessment Practice Rita has the 2 coins below in her purse.

Which coins does Rita need to have 31¢ exactly?

Rita Have 2 dimes in her purse.

1 dime = 10 cents

so, 2 dimes = 10+10 = 20 cents

To make 31 cents Rita needs 11 cents

11 cents can be shown as 1 dime and 1 penny.

1 dime = 10 cents + 1 penny = 1 cents

Total : 11 cents

### Lesson 13.3 Understand the Hour and Minute Hands

Solve & Share
Look at the clock. Ria says this clock shows 12 o’clock. Pat says this clock shows 3 o’clock. Do you agree with Ria or Pat? Tell why.

I can … tell time to the hour.

Visual Learning Bridge

Convince Me! How is the hour hand different from the minute hand?

Guided Practice

Write the time shown on each clock. Practice
Question 1.

hour
hand: 4
minute
hand: 12
4 o’clock

Question 2.

hour
hand: _______
minute
hand: _______
_______ o’clock

hour
hand: 9
minute
hand: 12
9 o’clock

Question 3.

hour
hand: _______
minute
hand: _______
_______ o’clock

hour
hand: 3
minute
hand: 12
3 o’clock

Independent Practice

Draw the hour and minute hands to show the time.
Question 4.

10 o’clock

Question 5.

2 o’clock

Question 6.

11 o’clock

Question 7.

12 o’clock

Question 8.

6 o’clock

Question 9.

1 o’clock

Question 10.

5 o’clock

Question 11.

8 o’clock

Question 12.
Higher Order Thinking Write a time. Draw the hour and minute hands to show the time. Draw a picture to show an activity you do at that time.
_______ o’clock

6 o’clock

Problem Solving

Solve each problem below.
Question 13.
Look for Patterns Sarah wakes up at 7 o’clock. Draw the hands on the clock to show 7 o’clock.

Question 14.
enVision® STEM Each string on a guitar makes a different sound when it vibrates. Joe starts tuning his guitar at 9 o’clock. It takes him one hour to finish. What time does he finish? _______ o’clock

At 10 o’clock

Question 15.
Higher Order Thinking Karen starts playing soccer one hour after 5 o’clock. Draw the hour and minute hands on the clock to show what time Karen starts playing soccer.
Then write a sentence about an activity you might do at that time.

I play Cricket for 1 hour

Question 16.
Assessment Practice Bill likes to read after 3 o’clock and before 5 o’clock. Which clock shows the time Bill might read?

### Lesson 13.4 Tell and Write Time to the Hour

Solve & Share
Both of the clocks show the same time. Tell me what time is shown. Then write one way the clocks are alike and one way they are different.
I can … tell time to the hour using 2 different types of clocks.

Visual Learning Bridge

Convince Me! Do the clocks show the same time? Explain.

No. The left side clock time is 7:00 and right side clock time showing is 8:00.

Guided Practice

Draw the hands on the clock face. Then write the time on the other clock.
Question 1.

Question 2.

Question 3.

Question 4.

Independent Practice

Draw the hands on the clock face. Then write the time on the other clock.
Question 5.

Question 6.

Question 7.

Question 8.

Question 9.

Question 10.

Think about how hands move on a clock to help solve the problem.

Question 11.
Number Sense Mary writes a pattern. Then she erases some of the times. Write the missing times.
6:00, 8:00, ______ : _______, 12:00, _____ : ______

6:00, 8:00, 10:00, 12:00, 2:00

Problem Solving

Solve each problem below.
Question 12.
Reasoning Raul starts riding his bike at 1:00. He rides for 1 hour. What time does Raul stop? Draw the hands on the clock face. Then write the time on the other clock.

Question 13.
Vocabulary Lucy reads for 1 hour. She starts reading at 8:00. What time did Lucy stop reading? Draw the hands on the clock face. Then write the hour Lucy stops reading.

_______ o’clock

9 o’clock

Question 14.
Higher Order Thinking David goes to bed 2 hours before his mother. David’s mother goes to bed at 11:00.
Write the time David goes to bed on the clock.

Question 15.
Assessment Practice Maribel washes dishes after 6:00 and before 9:00. Which clocks show a time Maribel might wash dishes? Choose two that apply.

### Lesson 13.5 Tell and Write Time to the Half Hour

Solve & Share
The minute hand travels all the way around the clock every hour. Each little mark is 1 minute of time.
Count how many minutes make up I hour. How many marks are there if the minute hand goes only halfway around the clock? Explain your answer.
I can … tell time to the half hour.

Visual Learning Bridge

Convince Me! Why is the hour hand between 6 and 7 when it is 6:30?

Guided Practice

Write the numbers to complete each sentence. Then write the time on the other clock.
Question 1.

Question 2.
The hour hand is between ________ and ______.
The minute hand is on _______.

The hour hand is between 4 and 5.
The minute hand is on 6

Independent Practice

Write the time shown on each clock.
Question 3.

The hour hand is between 8 and 9.
The minute hand is on 6

Question 4.

The hour hand is between 5 and 6.
The minute hand is on 6

Question 5.

The hour hand is between 12 and 1.
The minute hand is on 6

Look at the pattern. Write the missing times./
Question 6.
6:00, 6:30, 7:00, ______,8:00, _______, _______

6:00, 6:30, 7:00, 7:30, 8:00, 8:30, 9:00

Question 7.
2:30, 3:30, ______,5:30, _______, _______

2:30, 3:30, 4:30, 5:30, 6:30, 7:30, 8:30

Question 8.
Higher Order Thinking Carlos plays basketball for 30 minutes each day. He always starts playing at half past an hour. Write times he might start and stop playing basketball. Draw the hands on each clock face to show the times.

Problem Solving

Solve each problem below.
Question 9.
Be Precise Sandy walks her dog at 3:00. She walks for 30 minutes. What time does Sandy stop walking her dog? Draw the hands on the clock face. Write the time on the other clock.

Sandy stop walking her dog at 3:30

Question 10.
Be Precise Robin gets to school at 9:00. Her math class starts at half-past 9. What time does Robin’s math class start? Draw the hands on the clock face. Write the time on the other clock.

Robin’s math class start at 9:30

Question 11.
Higher Order Thinking Show 8:00 on the first clock. On the second clock, show the time 30 minutes later. Is the hour hand still at 8? Explain.

No, The hour hand will rotate and it will lie between 8 to 9.

Question 12.
Assessment Practice Which clock below shows the same time as the clock face?

‘C’ clock shows the same time as the clock face.

### Lesson 13.6 Problem Solving

Reasoning
Solve & Share
Noel has a music lesson at 3:30. At 4:30, he goes to the library. He gets ready at 5:00 so he can have dinner at 5:30. After dinner ends at 6:00, he plays a game. Organize Noel’s schedule in a way that makes sense to you.
I can … use reasoning to tell and write time.

Thinking Habits What do the numbers stand for? How are the numbers in the problem related?

Visual Learning Bridge

Convince Me! What happens 1 hour after Art begins? Explain how you know.

Guided Practice

Use Mr. Diaz’s Class Schedule above to answer the questions. Circle the activity that starts at the time shown. Then explain your reasoning.
Question 1.

Question 2.

Independent Practice

Use the Nature Trip Schedule to answer the questions.

Question 3.
Which activity do children do just before the Bird Watch? Explain your reasoning.

‘Walk’ is the activity children do just before the Bird. It is at 10:00 before Bird Watch which is at 11:00.

Question 4.
Which activity or activities do children do after Lunch? Explain your reasoning.

‘Make a bird house’ is the activity children do after Lunch. It is at 12:30 after lunch which is at 12:00

Question 5.
Which activity starts at the time shown? Explain your reasoning.

‘Make a Birdhouse’ is the activity. It is at 12:30.

Question 6.
Vocabulary Circle the time that shows a half hour past 3:00.
2:00
3:00
3:30
4:00

3:30

Problem Solving

Visiting the City Andrew’s family takes a day trip to the city.
Help him solve the problems below using the Family Schedule.

Question 7.
Model The minute hand fell off this clock. What time should the clock show when Andrew’s family arrives at the Aquarium?
Draw the minute hand and write the time shown.

Question 8.
Reasoning Andrew writes down all the activities his family is doing at 30 minutes after the hour. How many activities did Andrew write? Explain how you found out.

### Topic 13 Fluency Practice Activity

Point&Tally
Find a partner. Get paper and a pencil. Each partner chooses a different color: light blue or dark blue. Partner I and Partner 2 each point to a black number at the same time. Both partners add those numbers. If the answer is on your color, you get a tally mark. Work until one partner gets twelve tally marks.
I can … add and subtract within 10.

### Topic 13 Vocabulary Review

Word List
• cent (c)
• minute
• dime
• minute
• dollar hand
• half hour
• nickel
• hour o’clock
• hour hand
• quarter

Understand Vocabulary
Question 1.
Circle the hour hand.

Question 2.
Circle the minute hand.

Question 3.
Fill in the blank.
Use a word from the Word List.
A 5¢ coin is called a __________

Question 4.
Fill in the blank.
Use a word from the Word List.
A 25¢ coin is called a ___________ .

Question 5.
Fill in the blank.
Use a word from the Word List.
There are 10 dimes in one __________.

Use Vocabulary in Writing
Question 6.
Tell what time is shown on the clock using a word from the Word List.

### Topic 13 Reteaching

Set A

You can draw the hour and minute hands to show the time. Show 8:00

This clock shows 5 o’clock.

Draw or write the time.
Question 1.

Question 2.

_________ 0′ clock

6 0′ clock

Draw the hands on the clock face. Then write the time on the other clock.
Question 3.

Set B

What time do the clocks show?

Remember: Half past means 30 minutes after the hour.

Write the time shown on each clock.
Question 4.

half past _______
or ______ : ______

half past 7

or 7:30

Question 5.

half past _______
or ______ : ______

half past 2
or 2:30

Set C

Thinking Habits
Reasoning
What do the numbers stand for?
How are the numbers in the problem related?

Use the schedule to answer the questions.

Question 6.
What activity starts 2 hours after Reading?

Recess is the activity starts 2 hours after Reading

Question 7.
What time does Math begin?
_______ : _______

9:30

### Topic 13 Assessment Practice

Question 1.
Lisa rides her bike after 2 o’clock and before 6 o’clock every Friday.
Choose two clocks that show the time Lisa might ride her bike.

Question 2.
Which clock shows the same time as the clock face?

D

Question 3.
Draw the time on the clock.

5 o’clock

Question 4.
Draw hands on the clock face to show the time that Story Time starts.

Question 5.
Show the same time on both clocks. How do you know you are correct?

Minute hand is at12  and hour hand is at 3, so the time is 3 o’clock.  same time is displayed on the other clock also.

A Trip to the Zoo Carol and her class take a trip to the zoo. The chart shows their schedule.

Question 1.
Show another way to write the time for each activity.
Large Animals _________
Train Ride _________

Large Animals – 10 o’ clock
Train Ride – Half past 9 o’ clock

Question 2.
Draw the hands on the clock to show the time for the Dolphin Show.

Question 3.
The class left school at half past 8.
Draw the hands and write the time on the clocks to show what time they left school.

Question 4.
Carol says that this clock shows the same time that Lunch starts.

Do you agree with her?
Circle Yes or No.