# Into Math Grade 3 Module 5 Lesson 4 Answer Key Multiply Multiples of 10 by 1-Digit Numbers

We included HMH Into Math Grade 3 Answer Key PDF Module 5 Lesson 4 Multiply Multiples of 10 by 1-Digit Numbers to make students experts in learning maths.

## HMH Into Math Grade 3 Module 5 Lesson 4 Answer Key Multiply Multiples of 10 by 1-Digit Numbers

I Can use properties, place value, regrouping, and concrete and visual models to find a product when one factor is a multiple of 10.

Darvin needs $200 to buy a new pottery wheel. So far, he has sold 7 bowls for$30 each. Does Darvin have enough money to buy the new wheel?

Show how you can solve the problem.

Turn and Talk Suppose one of Darvin’s customers returns a cracked bowl. If Darvin gives her $30 back, will he still have enough for his new wheel? Explain how you know. Answer: Given that; Darvin needs to buy a new pottery wheel =$200
He sold = 7 bowls
Each bowl cost = $30 Therefore 7 bowls ×$30 = $210 Darvin has enough money to buy a new pottery wheel. The customer returns a cracked bowl then Darvin gives her =$30
After returning back $210 –$30 = $180 Now, Darvin has not had enough money to buy a new pottery wheel. Build Understanding 1. Alla asks 5 friends to help build a computer application. She pays each friend$30. How much does Alla pay her friends?

Show equal groups.
A. How many groups of 30 do you need?
______________________

5 × 30 = 150

How can you show the groups of 30?
Multiplying 5 groups of 30 = 5× 30

Draw a stick for each ten.

Here each stick is 10. So, 15 sticks × 10 = 150

Draw a square for each hundred.

Here there are 1 hundred and 5 tens

square equal to hundred and stick equal to ten.

B. How can you regroup the tens as hundreds?
______________________

5 × 30 = 150 tens
150 = 1 hundred 50 tens.
150 = 150.

C. What is the product?
Alla pays her friends ___

5 × 30 = 150.
The product is 150.

Turn and Talk How can you use mental math to tell whether you need to regroup?

Connect to Vocabulary
You have learned that to regroup is to exchange amounts of equal value to rename a number. You can use place value to regroup multiples of 10.

Step It Out

2. Fred sells 6 chess sets for $40 each at a craft show. How much money does he make? A. Complete the visual model to show 6 groups of 40. Answer: 6 × 40 = 240. B. Combine the tens. Show how to regroup the tens as hundreds. Answer: 6 × 40 = 240 240 = 2 hundreds 40 tens. C. Write the product. _______ Answer: 6 × 40 = 240 240 is the product. D. Use place value to find the product. Multiply the ones: 6 × 0 ones = ___ ones Answer: Ones place value is 0 6 × 0 = 0 E. Multiply the tens: 6 × 4 tens = ___ tens Answer: F. Write the product. Fred makes ___ Is the product the same using both methods? Explain why or why not. _____________________________ _____________________________ Answer: Fred makes 5 × 6 = 30 30 is the product Turn and Talk Which multiplication method works best for you? Explain why you like that method best. Check Understanding Math Board Question 1. A chair Costs$70. How much do 3 chairs cost? Find the product.
Given that;
The chair cost = $70 The cost of 3 chairs = 3×$70 = $210 Question 2. 6 × 30 = ___ Answer: 6 × 30 = 180 Multiply 6 with 30 then we get 180. Question 3. __ = 50 × 8 Answer: 400 = 50 × 8 Multiply 50 with 8 then we get 400. Question 4. 7 × 40 = ___ Answer: 7 × 40 = 280 Multiply 7 with 40 then we get 280. On Your Own Question 5. Use Structure Explain why the product 2 × 80 and 8 × 20 are the same. Answer: The product of two numbers is the result when we multiply them together. So, 2 × 80 = 160 8 × 20 = 160 Find the product. Question 6. 4 × 30 = ___ Answer: 4 × 30 = 180 Multiplying 4 with 30 then we get 180. Question 7. 5 × 20 = ___ Answer: 5 × 20 = 100 Multiplying 5 with 20 we get 100. Question 8. ___ = 7 × 80 Answer: 560 = 7 × 80 Multiplying 7 with 80 then we get 560. Question 9. ___ = 60 × 6 Answer: 360 = 60 × 6 Multiplying 60 with 6 then we get 360 Question 10. 4 × 90 = ___ Answer: 4 × 90 = 360 Multiplying 4 with 90 then we get 360. Question 11. 80 × 9 = ___ Answer: 80 × 9 = 720 Multiplying 80 with 9 then we get 720. Question 12. Answer: Multiplying 90 with 3 we get 270 Question 13. Answer: Multiplying 50 with 9 then we get 450. Question 14. Answer: Multiplying 70 with 6 when we get 420. Question 15. Use Structure Rare comic books cost$9 each. There are 40 comic books in a set. How much would it cost to buy all the comic books in a set? Show your work.
Cost of each Rare comic book = $9 Total number of comic books = 40 The total cost of comic books = 40 ×$9 = \$360