Question

1. round the factors to estimate the products.

a. 697×82≈____×__ = ____
a reasonable estimate for 697×82 is ______.
b. 5,897×67≈____×__ = ____
a reasonable estimate for 5,897×67 is ______.
c. 8,840×45≈____×__ = ____
a reasonable estimate for 8,840×45 is ______.

Explanation:

Step1: Round 697

Round 697 to 700 as it is closer to 700.

Step2: Round 82

Round 82 to 80 as it is closer to 80.

Step3: Calculate the product

$700\times80 = 56000$

Answer:

a. $697\times82\approx700\times80 = 56000$
A reasonable estimate for $697\times82$ is $56000$.

Step4: Round 5897

Round 5897 to 6000 as it is closer to 6000.

Step5: Round 67

Round 67 to 70 as it is closer to 70.

Step6: Calculate the product

$6000\times70=420000$