# Into Math Grade 4 Module 5 Lesson 5 Answer Key Use Place Value to Multiply 2-Digit Numbers

We included HMH Into Math Grade 4 Answer Key PDF Module 5 Lesson 5 Use Place Value to Multiply 2-Digit Numbers to make students experts in learning maths.

## HMH Into Math Grade 4 Module 5 Lesson 5 Answer Key Use Place Value to Multiply 2-Digit Numbers

I Can use place value and regrouping to multiply a 2-digit number by a 1-digit number.

Ramy is in a swim club that helps children learn about competitive swimming. In one race, he swims 4 laps of the pool. Each lap is 24 feet long. How far does Ramy swim during the race?  Build Understanding

1. For the standing long jump, Gwen lands a jump that measures 24 inches. Amelia’s jump is 2 times the length of Gwen’s jump. What is the measure of Amelia’s jump? A. How can you use base-ten blocks to show 2 × 24? Draw a quick picture to show your answer.
B. Use what you know about place value to write 2 × 24 vertically. Record the numbers.
C. When you multiply the ones, how can you record 2 × 4 ones? ____________
D. When you multiply the tens, how can you record 2 × 2 tens? ______________
E. Amelia’s jump measures ___________

Turn and Talk How do you know if your answer is reasonable?

Step It Out

2. Rachel practices swimming 5 days a week. Each practice lasts for 45 minutes. How many minutes does Rachel practice in a week?
A. Use base-ten blocks to show 5 × 45.
Draw a quick picture to show your work.
B. Write the problem vertically, lining up the digits by place value. C. Multiply the ones. 5 × 5 ones = ___ ones

• Regroup ones as __ tens ___ ones. Record.

D. Multiply the tens. 5 × 4 tens = __ tens

• Add the regrouped __ tens + __ tens = __ tens
• Record the __ in the hundreds place and the __ in the tens place.

E. Rachel practices for ____ minutes in a week.

Check Understanding Math Board

Question 1.
Estimate. ___ Question 2.
Estimate. ___ Question 3.
The Gladiators scored twice as many points as the Patriots. How many points did the Gladiators score?
_________________ Estimate. Then find the product.

Question 4.
Estimate: ___ Question 5.
Estimate: ___ Question 6.
Estimate: ___ Estimate. Write the problem vertically and solve.

Question 7.
Estimate: ___
8 × 96

Question 8.
Estimate: ___
3 × 52

Question 9.
Estimate: ___
6 × 83

Question 10.
Reason Why should you check to see if an answer is reasonable?
__________________
__________________