McGraw Hill Math Grade 3 Chapter 6 Lesson 8 Answer Key Multiplying by Breaking Apart

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McGraw-Hill Math Grade 3 Answer Key Chapter 6 Lesson 8 Multiplying by Breaking Apart

Solve

Write the missing numbers. Find each product.

Question 1.
9 × 9 = 9 × (5 + 4)
9 × 9 = (9 × 5) + (9 × 4)
9 × 9 = 45 + 36
9 × 9 = 81

Question 2.
3 × 4 = 3 × (3 + 1)
3 × 4 = (___ × ___) + (3 × 1)
3 × 4 = ___ + ___
3 × 4 = ____
Answer:
3 x 4 = 12

Explanation:
3 × 4 = 3 × (3 + 1)
3 × 4 = (3 × 3) + (3 × 1)
3 × 4 = 9 + 3
So, 3 × 4 = 12

Question 3.
5 × 8 = 5 × (2 + 6)
5 × 8 = (___ × ___) + (___ × ____)
5 × 8 = ___ + ___
5 × 8 = ____
Answer:
5 x 8 = 40

Explanation:
5 × 8 = 5 × (2 + 6)
5 × 8 = (5 × 2) + (5 × 6)
5 × 8 = 10 + 30
So, 5 × 8 = 40

Question 4.
Taylor says 4 + 4 is the only way to break apart 8. Is she correct? If not, write three more ways.
Answer:
No, we have some more ways to break apart 8 other than 4 + 4

Explanation:
The other ways to break apart 8 are
8 = 1 + 7
8 = 2 + 6
8 = 5 + 3.

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