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McGraw-Hill Math Grade 3 Answer Key Chapter 6 Lesson 6 Multiplying by Multiples of 10
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Question 1.
9 × 10 = 90
Question 2.
5 × 50 = ___
Answer:
Explanation:
5 x 50 = 5 groups of 5 tens
5 groups of 5 tens = 25 tens
15 tens = 250
So, 5 x 50 = 250.
Question 3.
8 × 30 = ___
Answer:
Explanation:
8 x 30 = 8 groups of 3 tens
8 groups of 3 tens = 24 tens
24 tens = 240
So, 8 x 30 = 240.
Question 4.
2 × 40 = ___
Answer:
Explanation:
2 x 40 = 2 groups of 4 tens
2 groups of 4 tens = 12 tens
12 tens = 120
So, 3 x 40 = 120.
Question 5.
7 × 60 = ___
Answer:
Explanation:
7 x 60 = 7 groups of 6 tens
7 groups of 6 tens = 42 tens
42 tens = 420
So, 7 x 60 = 420.
Question 6.
1 × 90 = ___
Answer:
Explanation:
1 x 90 = 1 group of 9 tens
1 group of 9 tens = 9 tens
9 tens = 90
So, 1 x 90 = 90.
Question 7.
6 × 20 = ___
Answer:
Explanation:
6 x 20 = 6 groups of 2 tens
6 groups of 2 tens = 12 tens
12 tens = 120
So, 6 x 20 = 120.
Question 8.
0 × 80 = ___
Answer:
0 x 80 = 0
Explanation:
The product of any number with 0 is 0
So, 0 x 80 = 0.
Question 9.
6 × 40 = ___
Answer:
Explanation:
6 x 40 = 6 groups of 4 tens
6 groups of 4 tens = 24 tens
24 tens = 240
So, 6 x 40 = 240.
Question 10.
Most people eat about 3 pounds of food every day. How many pounds of food would 70 people eat in one day?
Answer:
Explanation:
Most people eat about 3 pounds of food every day
To find the number of pounds of food 70 people eat in one day
Multiply 3 with 70
3 x 70 = 3 groups of 7 tens
3 groups of 7 tens = 21 tens
21 tens = 210
3 x 70 = 210
So, 70 people would eat 210 pounds of food in one day.