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Estimating
Comparing Numbers
Multi-digit Addition
100

 Another name for estimate

Rounding

100
The alligator always eats the ____________

number


bigger

100

6,311+268

6,579

200

10,133 rounded to the nearest hundred

10, 100

200

Arrange these numbers from least to greatest

8,002  2,080,  820  2,008  8,200

820,  2,008  2,080  8,002  8,200

200

34,698+71,840

106,538

300

122,453 rounded to the nearest hundred

122,500

300

Arrange these numbers from least to greatest

462  426  642  624

426, 462, 624, 642

300

8,314+2,493

10,807

400

78,955 rounded to the nearest ten thousand

80,000

400

Which number is greater

88,654     88,645

88,654

>

400

527+275+752

1,554

500

45, 135 rounded to the nearest thousand

45,000

500

Arrange these numbers from least to greatest

 790  540  1,365 992

540, 790, 992, 1,365
500

38,193+6,376+241,457

286,026