Estimating Sums and Differences of Decimals

Last week, the Clearwater CD company had sales of $1,158.79. This week, the company had sales of $6,997.05. Which is the best estimate of the company’s total sales for both weeks? (Estimate 1,158.79 + 6,997.05)

Which is the best estimate?

11.36 + 52.6 (Round to the nearest whole)

Which is the best estimate? 69.58 - 34.26 (Round to the nearest whole)

Adrienne’s lunch cost $13.16. She hands the cashier $20. About how much change does Adrienne receive? (Round to the nearest whole and estimate 20 - 13.16)

What is the best estimate for 12.98 + 7.3

Estimate 4.5 + 9.7 + 24.76 by rounding

Round to the nearest whole number to solve:

41.10 + 36.54 = __________

Round to the nearest whole number to solve:

85.31 + 44.17 = __________

In the equation 497.55 - 265.41 = 232.14, the number 232.14 is the _________________

In the equation 8.9 + 55.2 = 64.10, the number 64.10 is the _________________