# Into Math Grade 5 Module 1 Lesson 4 Answer Key Multiply by 1-Digit Numbers

We included HMH Into Math Grade 5 Answer Key PDF Module 1 Lesson 4 Multiply by 1-Digit Numbers to make students experts in learning maths.

## HMH Into Math Grade 5 Module 1 Lesson 4 Answer Key Multiply by 1-Digit Numbers

I Can multiply multi-digit whole numbers by 1-digit numbers using regrouping and place value.

Step It Out

1. Adah walks 1,274 steps once around her neighborhood. If she walks around her neighborhood 3 times, how many steps does she walk?

A. Estimate the number of steps Adah walks. Show your work.
B. Multiply to find the number of steps she walks.
_________________________
_________________________

• Multiply the ones.
Regroup __ ones as ___.
• Multiply the tens. Add the regrouped tens.
__ tens + ___ ten = ___ tens
• Multiply the hundreds. Add the regrouped hundreds.
___ hundreds + ___ hundreds = ___ hundreds
• Multiply the thousands.
Adah walks ___ steps.

C. How do, you know if your answer is reasonable?
_________________________
_________________________
Answer:
Given,
Adah walks 1,274 steps once around her neighborhood.
1274 × 3 = 3822 steps

2 ones
2 tens
6 hundreds + 2 hundreds = 8 hundreds
3 thousand
300 + 600 + 200 + 20 + 2 = 3822 steps
Adah walks 3822 steps.

Turn and Talk In multiplying 1,274 by 5, what does recording 3 above the digit 2 represent?

Step It Out

2. Michael walks to and from school each day. The round-trip distance is 4,206 feet. What is the total distance he walks to and from school in 5 days?

A. Estimate the total distance. Show your work.
B. Jason’s solution is shown. Work through the steps to solve the problem, and then determine his error.

• Multiply the ones.
• Multiply the tens.
• Complete the problem.
• What is the total distance? _______

C. Compare your work with Jason’s. What error did Jason make?
Answer:
Given,
Michael walks to and from school each day.
The round-trip distance is 4,206 feet.

So, the total distance he walks to and from school in 5 days is 21,030 feet.

Check Understanding Math Board

Estimate. Then find the product.

Question 1.
Estimate: ___

Answer: 3472

By multiplying 868 with 4 we get 3472.
The estimated product is 3500.

Question 2.
Estimate: ___

Answer: 38440

By multiplying 4805 with 8 we get 38440.
The estimated product is 38000.

Question 3.
Estimate: ___

Answer: 65604

By multiplying 9372 with 7 we get 65604.
The estimated product is 66000.

Question 4.
A kilometer is approximately 1,094 yards. Toby runs a 6-kilometer race. About how many yards does he run?
Answer:
Given,
A kilometer is approximately 1,094 yards.
Toby runs a 6-kilometer race.
1094
×   6
6564
Thus he runs about 6500 yards.

On Your Own

Estimate. Then find the product.

Question 5.
Estimate: _______

Answer: 2745

By multiplying 915 with 3 we get 2745.
The estimated product is 2700.

Question 6.
Estimate: ____

Answer: 12168
1352
×    9
12168
By multiplying 1352 with 9 we get 12168.
The estimated product is 12000.

Question 7.
Estimate: ___

Answer: 17224

By multiplying 4306 with 4 we get 17224.
The estimated product is 17000.

Question 8.
Estimate: ___

Answer: 35231

By multiplying 5033 with 7 we get 35231.
The estimated product is 35000.

Question 9.
Estimate: ___

Answer: 41630

By multiplying 8926 with 5 we get 41630.
The estimated product is 42000.

Question 10.
Estimate: ___

Answer:

By multiplying 27158 with 6 we get 162948.
The estimated product is 163000.

Find the unknown digits.

Question 11.

Answer: 3066
438
×  7
3066
So, the unknown digit is 0.

Question 12.

Answer: 14817
By multiplying 4939 with 3 we get 14,817 as the answer.
4939
× 3
14817
Just keep changing the units place to find a suitable answer.

Question 13.

Answer:
5534
×   9
49806
So, the missing numbers are 5, 9 , 0, 6
We have to change the numbers in the missing place and check whether it is suitable for the product.

Question 14.
In Michael’s neighborhood, there is a rectangular pathway that is 152 feet long and 9 feet wide. What is the area of the pathway?
Answer:
Given,
In Michael’s neighborhood, there is a rectangular pathway that is 152 feet long and 9 feet wide.
152 × 9 = 1368 sq. ft
Thus the area of the pathway is 1368 sq. ft.

Question 15.
A farmer has a corn field with 9 rows of corn. Each row has 1,026 corn plants. How many corn plants are there?
Answer:
Given,
A farmer has a corn field with 9 rows of corn.
Each row has 1,026 corn plants.
1026
×  9
9234
Therefore there are 9234 corn plants in 9 rows.

Question 16.
Martha runs 1,760 yards each day for 3 days. How many yards does she run?
Answer:
Given
Martha runs 1,760 yards each day for 3 days
1760
×   3
5280 yards
Thus she runs 5280 yards in 3 days.

On Your Own

Question 17.
Health and Fitness Darlene walks around her neighborhood. Her daily goal is to walk 4,000 steps.

• Does Darlene reach her daily goal if she walks around her neighborhood 5 times? Make an estimate to answer the question and show your work.
_________________________
_________________________
• How many steps does Darlene take if she walks around her neighborhood 5 times? Show your work.

Answer:
Given,
Darlene walks around her neighborhood. Her daily goal is to walk 4,000 steps.
852
× 5
4260
She will reach her goal if she walks her neighborhood 5 times.
Darlene takes 4260 steps if she walks around her neighborhood 5 times.

Question 18.
Reason Marisha solves a multiplication problem but leaves out some of her work. What are the unknown values of a and b? Explain how you know by describing place values and regrouping.

Answer:

a = 6
b = 1

Question 19.
Critique Reasoning Francisco solves a multiplication problem but makes an error

• What error does he make and what is the correct answer?

Answer:
The answer given by Francisco is incorrect.
4,315
×     8
34,520

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