Rounding Up or Down?
To the Nearest 100th
To the Nearest 1,000th
To the Nearest 10,000th
Adding and Subtracting up to 100,000
100

Rounding to the nearest tens; Do we round 34 up or down? Why?

Down; The digit 4 is less than the digit 5 so we round down.

100

365

400

100

4,533

5,000

100

87,323

90,000

100

4,567+3,588=

8,155

200

Rounding to the nearest 100s; Do we round 634 up or down? Why?

Down; The digit 3 is less than the digit 5 so we round down.

200

725

700

200

6,432

6,000

200

55,999

60,000

200

7,623-4,517=

3,106

300

Rounding to the nearest 1,000s; Do we round 7,634 up or down? Why?

Up; The digit 6 is greater than the digit 5 so we round up.

300

589

600

300

6,789

7,000

300

67,543

70,000

300

54,234+67,432=

121,666

400

Rounding to the nearest 10,000s; Do we round 34,342 up or down? Why?

Down; The digit 4 in the thousands place is less than the digit 5 so we round down.

400

929

900

400

7,314

7,000

400

76,567

80,000

400

57,832-23,769=

34,063

500

Rounding to the nearest 100,000s; Do we round 345,723 up or down? Why?

Down; The digit 4 is less than the digit 5 so we round down.

500

897

900

500

9999

10,000

500

99,998

100,000

500

100,000-70,999=

29,001

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