Mental Math Estimate Sums and Differences

Estimate to the thousands place.
6,375 - 1890 =

• 4,485

• 4,500

• 4,000

• 5,000

Estimate to the hundreds place.
7,538 + 2,317 = 

• 9,800

• 9,900

• 9,855

• 520

Estimate to the thousands place.
163,762 + 3,210 =

• 167,000

• 166,972

• 168,000

• 166,800

Estimate to the thousands place.
6,138 + 5,963 + 6,023 + 5,874 + 6,003

• 31,000

• 30,001

• 28,000

• 30,000

Estimate the sum of 52+59 by rounding to the nearest tens

• 110

• 100

• 111

• 90

Estimate the sum of 37+99 by rounding to the nearest tens

• 120

• 150

• 140

• 136

Estimate the sum of 120+190 by rounding to the nearest hundreds

• 100

• 200

• 0

• 300

Estimate the sum of 327+431 by rounding to the nearest hundreds

• 700

• 600

• 758

• 800

Estimate the difference of 470-289 by rounding to the nearest hundreds

• 300

• 100

• 181

• 200

Estimate the difference of 7,900-2,999 by rounding to the nearest thousands

• 6,000

• 4,000

• 5,000

• 3,000