Addition
Subtraction
Estimating
Story Problems
Subtract Across 0
100

Add:

456 + 902

1,358

100

Subtract:

497 - 285

212

100

Estimate and Solve:

376 + 234

Round to the nearest hundred

600

100

Elle says, “When rounding to the nearest thousand, 928,674 rounds to 930,000.” Do you agree?

No, it rounds to 929,000.
100

Solve:

200 - 159

41

200

Add:

2,856 + 7,234

10,090

200

Subtract:

3,975 - 1,524

2,451

200

Estimate and Solve:

1,453 + 1,735

Round to the nearest thousand

3,000

200

Aubrey writes a blog. 29,604 people read her first post. The next week, 47,684 people read her second post. Aubrey’s third post had 41,582 readers. What is the total number of readers?

118,870

200

Solve:

6,000 - 487

5,513

300

Add:

73,967 + 23,765

97,732

300

Subtract:

78,767 - 29,672

49,095

300

Estimate and Solve:

23,068 - 12,980

Round to the nearest ten thousand

10,000

300

A crayon company makes 87,491 blue crayons, 36,262 red crayons, and 25,063 gray crayons. How many more blue crayons are made than red and gray crayons combined?


26,166

300

Solve:

45,000 - 4,376

40,624

400

Add:

756,903 + 235,785

992,688

400

Subtract:

923,987 - 765,234

158,753

400

Estimate and Solve:

345,098 + 284,954

Round to the nearest hundred thousand

600,000

400

Will the difference between 44,041 and 43,876 be greater or less than 1,000? Explain.

Less than 1,000. The answer is 165.

400

Solve:

500,000 - 26,723

473,277

500

Add:

4,586,023 + 2,986,472

7,572,495

500

Subtract:

2,784,093 - 2,654,872

129,221

500

Estimate and Solve:

2,093,856 - 1,023,456

Round to the nearest million

1,000,000

500

The house on McLean street sold for $119,673 less than the house on Templeton Lane. If the house on Templeton Lane sold for $475,006, how much did the house on McLean Street sell for?

$355,333

500

7,034,050 - 254,987

6,779,063

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