Easy Rounding

Which of the following is the best estimate for the equation:

61.44 + 88.3

• 100

• 120

• 150

• 200

Estimate the difference by rounding each decimal to the nearest ten.

17.52 - 12.03

• 12

• 11

• 15

• 10

Estimate the difference by rounding each decimal to the nearest hundred.

376.8 - 109.5

• 100

• 200

• 300

• 400

Round each decimal to the nearest whole number. Then add or subtract.

19.83 + 9.93

Round each decimal to the nearest whole number. Then add or subtract.

3.872 + 2.409

Round each decimal to the nearest whole number. Then add or subtract.

9.086 - 2.419

An airplane named Hawkeye flies 375.52 mph. An airplane named Foxbat flies 1,864.29 mph. About how much faster is the Foxbat than the Hawkeye? Round the decimals to the nearest whole number.

The lengths for four horseback riding trails is shown below. Estimate the total length of all the trails by rounding to the nearest whole number.

Round 5.67 to the nearest whole number for estimation.

• 6

• 8

• 7

• 5

Which of the following is the best estimate for the equation:

70.2-59.7

• 25

• 10

• 3

• 19