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McGraw-Hill Math Grade 3 Answer Key Chapter 5 Lesson 7 Fact Families
Solve
Complete the fact family.
Question 1.
2 × 9 = 18
___ × 9 = 18
____ ÷ 9 = 2
18 ÷ 2 = ___
Answer:
2 x 9 = 18
9 x 2 = 18
18 ÷ 9 = 2
18 ÷ 2 = 9
Explanation:
Some multiplication and division sentences use the same numbers.
They make up a fact family
I wrote the fact family for the numbers 2, 9 and 18.
Question 2.
___ × 8 = 24
8 × 3 = ___
24 ÷ ___ = 8
24 ÷ ___ = 3
Answer:
3 × 8 = 24
8 × 3 = 24
24 ÷ 3 = 8
24 ÷ 8 = 3
Explanation:
Some multiplication and division sentences use the same numbers.
They make up a fact family
I wrote the fact family for the numbers 3, 8 and 24.
Question 3.
5 × 8 = ____
8 × ___ = 40
____ ÷ 5 = 8
40 ÷ ___ = 5
Answer:
5 × 8 = 40
8 × 5 = 40
40 ÷ 5 = 8
40 ÷8 = 5
Explanation:
Some multiplication and division sentences use the same numbers.
They make up a fact family
I wrote the fact family for the numbers 5, 8 and 40.
Question 4.
Write the fact family that uses 9, 1, and 9.
____ × ____ = ___
____ × ____ = ___
____ ÷ ____ = ___
____ ÷ ____ = ___
Answer:
9 × 1 = 9
1 × 9 = 9
9 ÷ 1 = 9
9 ÷ 9 = 1
Explanation:
Some multiplication and division sentences use the same numbers.
They make up a fact family
I wrote the fact family for the numbers 9, 1 and 9.
Question 5.
Kate has 16 balloons. She gives 2 friends an equal number of balloons. How many balloons does she give to each friend? ________
If she shares the balloons with 8 friends, how many balloons does she give each friend? _______
Answer:
16 ÷ 2 = 8
8 balloons for 2 friends each
16 ÷ 8 = 2
2 balloons for 8 friends each
Explanation:
Kate has 16 balloons
She gives 2 friends an equal number of balloons
Divide 16 with 2
16 ÷ 2 = 8
She gives 8 balloons to each of 2 friends
If she shares the balloons with 8 friends
Divide 16 with 8
16 ÷ 8 = 2
She gives 2 balloons to each of 8 friends.