Quiz: Estimating Sums, Differences, Products, and Quotients

1. Which of the following is an estimate for the sum of the numbers 5,478 + 3,456 if each were round to the nearest thousand?
a. 9,000
b. 8,900
c. 8,000
2. Which of the following would NOT have an estimated answer of 4,500 if you were to round to the nearest ten?
a. 55 × 84
b. 3,549 + 949
c. 6,249 – 1,751
3. Estimate the product of 456 × 567 by rounding to the nearest hundred.
a. 300,000
b. 250,000
c. 240,000
4. Which of the following would not be an acceptable estimate of the product 250 × 750 if you were to round to the nearest hundred?
a. 240,000
b. 210,000
c. 160,000
5. Estimate the quotient of 19,543 ÷ 4,426 by rounding to the nearest thousand.
a. 4
b. 5
c. 6
6. Which of the following is a correct statement?
a. 200,000 is an estimate for the difference 564,123 – 359,783 rounded to the nearest ten thousand.
b. 40 is an estimate for the quotient 120,123 ÷ 3,456 rounded to the nearest thousand.
c. Both statements are correct.

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