Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 5 Lesson 6 Estimating Products to secure good marks & knowledge in the exams.
McGraw-Hill Math Grade 4 Answer Key Chapter 5 Lesson 6 Estimating Products
Multiply
Use rounding or compatible numbers to estimate each product.
Question 1.
41 × 63 = 2,400
Explanation:
40 x 60 that is 4 x 6 = 24
then zeros are added
Question 2.
53 × 51 = ___
Answer:
53 × 51 = 2703
Explanation:
both the numbers are rounded to 50
5 x 5 = 25
50 x 50 = 2500
Question 3.
19 × 84 = ____
Answer:
19 × 84 = 1596
Explanation:
both the numbers are rounded to 20 and 80
2 x 8 = 16
20 x 80 = 1600
Question 4.
81 × 33 = ___
Answer:
81 × 33 = 2673
Explanation:
both the numbers are rounded to 80 and 30
8 x 3 = 24
80 x 30 = 2400
Question 5.
36 × 22 = ___
Answer:
36 × 22 = 792
Explanation:
both the numbers are rounded to 40 and 20
4 x 2 = 8
40 x 20 = 800
Question 6.
32 × 37 = ___
Answer:
32 × 37 =1184
Explanation:
both the numbers are rounded to 30 and 40
3 x 4 = 12
30 x 40 = 1200
Question 7.
An adult giraffe at the zoo eats 517 pounds of leaves in a week. Write the expression that shows the best way to estimate how many pounds of leaves the giraffe will eat in 5 weeks.
Answer:
517 x 5
Explanation:
adult giraffe eats 517 pounds
517 x 5 = 2585 leaves.