Round: Nearest Ten
Round: Nearest Hundred
Estimate with addition (to nearest hundred)
Estimate with addition (to nearest ten)
What numbers round to...
100

Round 32 to the nearest ten

30
100

Round 137 to the nearest hundred

100

100

Estimate by rounding to the nearest hundred: 

452 + 312

500 + 300 = about 800

100

Estimate the sum by rounding to the nearest ten:

47 + 52

50 + 50 = about 100

100
Name 5 numbers that round to 60

55, 56, 57, 58, 59, 60, 61, 62, 63, 64

200

Round 88 to the nearest ten

90

200

Round 567 to the nearest hundred

600

200

Estimate the sum by rounding to the nearest hundred:

425 + 268

400 + 300 = About 700

200

Estimate the sum by rounding to the nearest ten:

12 + 83

10 + 80 = About 90

200

Name 5 numbers that round to 20

15, 16, 17, 18, 19, 20, 21, 22, 23, 24

300

Round 47 to the nearest ten

50

300

Round 890 to the nearest hundred

900

300

Estimate the sum by rounding to the nearest hundred:

679 + 215

700 + 200 = About 900

300

Estimate the sum by rounding to the nearest ten:

39 + 19

40 + 20 = About 60

300

Name 5 numbers that round to 300

all numbers from 250-349

400

Round 492 to the nearest ten

490

400

Round 502 to the nearest hundred

500

400

Estimate the sum by rounding to the nearest hundred:

736 + 242

700 + 200 = About 900

400

Estimate the sum by rounding to the nearest ten:

44 + 82

40 + 80 = About 120

400

Name 5 numbers that round to 200

all numbers between 150-249

500

Round 178 to the nearest ten

180

500

Round 850 to the nearest hundred

900

500

Estimate the sum by rounding to the nearest hundred: 

477 + 523

500 + 500 = about 1,000

500

Estimate the sum by rounding to the nearest ten:

93 + 24

90 + 20 = About 110

500

List 5 numbers that round to 70

65, 66, 67, 68, 69, 70, 71, 72, 73, 74

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