Rounding and Estimation — Quiz
1.
Round 73 to the nearest 10.
2.
Round 456 to the nearest 100.
3.
Estimate the sum of 62 + 29 by rounding to the nearest 10.
4.
A student calculates 54 − 28 = 82. Use estimation to explain why this answer is unreasonable.
5.
Which of these is the BEST estimate for 387 + 214?
6.
What number is halfway between 60 and 70? When rounding to the nearest 10, which way dös it round?