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McGraw-Hill Math Grade 3 Answer Key Chapter 5 Lesson 2 Dividing by 3
Solve.
Divide. Use repeated subtraction or objects to help.
Question 1.
21 ÷ 3 = ___
Answer:
21 ÷ 3 = 7
Explanation:
Use Repeated subtraction:
21 – 3 = 18, 18 – 3 = 15, 15 – 3 = 12, 12 – 3 = 9, 9 – 3 = 6, 6 – 3 = 3 and 3 – 3 = 0
I subtracted 21 with 3 seven times
So, 21 ÷ 3 = 7.
Question 2.
9 ÷ 3 = ___
Answer:
9 ÷ 3 = 3
Explanation:
Use Repeated subtraction:
9 – 3 = 6, 6 – 3 = 3 and 3 – 3 = 0
I subtracted 9 with 3 three times
So, 9 ÷ 3 = 3.
Question 3.
15 ÷ 3 = ___
Answer:
15 ÷ 3 = 5
Explanation:
Use Repeated subtraction:
15 – 3 = 12, 12 – 3 = 9, 9 – 3 = 6, 6 – 3 = 3 and 3 – 3 = 0
I subtracted 15 with 3 five times
So, 15 ÷ 3 = 5.
Question 4.
0 ÷ 3 = ___
Answer:
0 ÷ 3 = 0
Explanation:
Use Repeated subtraction:
Zero divided by any number is 0
So, 0 ÷ 3 = 0.
Question 5.
Answer:
Explanation:
6 ÷ 3 = 2
Six divided by three is two.
Question 6.
Answer:
Explanation:
3 ÷ 3 = 1
Three divided by three is one.
Question 7.
Answer:
Explanation:
18 ÷ 3 = 6
Eighteen divided by three is six.
Question 8.
Answer:
Explanation:
27 ÷ 3 = 9
Twenty seven divided by three is nine.
Question 9.
Ava is putting 24 baseball cards in an album. Each page can hold 3 baseball cards. How many pages can Ava fill?
____ ÷ ____ = ___ pages
Answer:
Explanation:
Ava is putting 24 baseball cards in an album
Each page can hold 3 baseball cards
24 ÷ 3 = 8 pages
Ava can fill 8 pages using 24 baseball cards.