Question

1. fill in the blank with the missing estimate.

a. 751×34≈________×________ = 24,000
b. 627×674≈________×________ = 420,000
c. 7,939×541≈________×________ = 4,000,000

Explanation:

Step1: Round 751 and 34

Round 751 to 800 and 34 to 30 since $800\times30 = 24000$.

Step2: Round 627 and 674

Round 627 to 600 and 674 to 700 as $600\times700=420000$.

Step3: Round 7939 and 541

Round 7939 to 8000 and 541 to 500 because $8000\times500 = 4000000$.

Answer:

a. 800, 30
b. 600, 700
c. 8000, 500