We included **HMH Into Math Grade 3 Answer Key PDF** **Module 10 Lesson 3 Combine Place Values to Subtract **to make students experts in learning maths.

## HMH Into Math Grade 3 Module 10 Lesson 3 Answer Key Combine Place Values to Subtract

I Can combine place values and use flexible grouping to subtract 2- and 3-digit numbers.

**Spark Your Learning**

There were 528 people living in Elk Town. Some people moved away, as shown. How many people are now living in Elk Town?

Estimate. Then show two ways you can solve the problem.

Answer:

Estimation.

528 is rounded to 500

67 is rounded to 100

500 – 100 = 400

There were 528 people living in Elk Town. Some people moved away,

528 – 67 = 461

**Turn and Talk** How can you use place value to subtract the numbers in the tens place?

Answer:

By place value we can do mental math’s and found the answer.

**Build Understanding**

Question 1.

This map shows the populations of Wilton and Lakeside. How many more people live in Wilton?

Write an equation. ______________

Estimate: _____________

Answer:

35 more people live in Wilton.

Estimation:

327 is rounded as 300

292 is rounded as 300

300 – 300 = 0

Let n be the more people of Wilton

n = 327 – 292

n = 35

A. How can you rewrite 327 and 292 using tens and ones?

Answer:

We can write 327 as 32 tens and 7 ones

292 as 29 tens and 2 ones

B. How can you subtract 327 and 292 using tens and ones?

Think: Combine the hundreds and tens places as tens.

Answer:

C. How many more people live in Wilton?

Answer:

35 people more live in Wilton

D. Why would you combine place values to subtract?

Answer:

We regroup then we subtract at the place values

If the subtraction is not possible directly.

E. How do you know if your answer is reasonable?

Answer:

No my estimation and exact as have a vary

so, my answer is not reasonable.

**Turn and Talk** Would it be helpful to combine the place values of tens and ones as ones to subtract 327 and 292? Explain.

Answer:

no, the subtraction becomes impossible if we subtract

we can not regroup easily

**Step It Out**

Combine place values to find the difference.

Question 2.

300 – 24

Estimate: ___________

A. Since 4 > 0 and 2 > 0, combine the place values of hundreds and tens as tens. Rewrite the numbers as tens and ones.

300 = _______ tens _______ ones

24 = ________ tens ________ ones

Answer:

300 = 29 tens 10 ones

24 = 2 tens 4 ones

B. Regroup 30 tens as tens and ones.

30 tens = ________ tens _______ ones

Answer:

30 tens = 29 tens 10 ones

C. Subtract the ones. Record. Subtract the tens. Record.

Think: What is 29 – 2?

Answer: 27

Question 3.

682 – 175

Estimate: ____________

A. Since 5 > 2, combine the place values of tens and ones as ones. Rewrite the numbers as hundreds and ones.

682 = _________ hundreds ________ ones

175 = _________ hundred _________ ones

Answer:

682 is rounded to 700

175 is rounded to 200

700 – 200 = 500

682 = 6 hundreds 82 ones

175 = 1 hundred 75 ones

B. Subtract the ones. Record. Hundreds Subtract the hundreds. Record.

Think: What is 82 – 75?

Answer:

82 – 75 = 7

**Check Understanding**

Question 1.

There are 600 people living in Hillside. There are 218 fewer people living in Riverton. How many people live in Riverton?

Answer:

382 people live in Riverton

Explanation:

There are 600 people living in Hillside.

There are 218 fewer people living in Riverton.

600 – 218 = 382

**On Your Own**

Question 2.

**STEM** Water boils at 212°F. Water freezes when its temperature is 180°F lower. At what temperature does water freeze?

Answer:

Explanation:

Water boils at 212°F. Water freezes

when its temperature is 180°F lower.

212 – 180 = 32°F the water freeze

**Attend to Precision** Estimate. Then combine place values to find the difference.

Question 3.

Estimate: _________

Answer:

528 is rounded 500

453 is rounded to 400

500 – 400 = 100

Explanation:

Question 4.

Estimate: ________

Answer:

391 is rounded to 400

86 is rounded to 100

400 – 100 = 300

391 is regrouped as 3 hundreds and 91 ones

86 ones

91 – 86 = 5

Explanation:

Question 5.

**Reason** Last year, 471 people came to visit Clark City. Fewer visitors came to Clark City this year, as shown. How many visitors came to Clark City this year?

Answer:

Explanation:

471 people came to visit Clark City.

132 Fewer visitors came to Clark City this year

471 – 132 = 339

339 visitors came to Clark City this year

Question 6.

**Open-Ended** Write a word problem for 200 – 96. Then solve.

Answer:

There are 200 balloons out of them 96 are not blown? How many balloons are blown

Explanation:

200 – 96 = 104

**I’m in a Learning Mindset!**

What strategy did I use to subtract 3-digit numbers? Explain.

Answer:

we used place value to subtract the 3 digit numbers.