Nearest 10
Nearest 100
Estimating - Addition
Estimating - Subtraction
EXTRA
100

28

28 rounded to the nearest 10 is 30

100

504

500

100

58 + 30

ANSWER: 88


ESTIMATED: 90

100

64 - 30

ANSWER: 34


ESTIMATED: 30

100

Round 55 to the nearest 10

60

200

42

42 rounded to the nearest 10 is 40

200

278

300

200

64 + 27

ANSWER: 91

ESTIMATED: 90

200

98 - 49

ANSWER: 49


ESTIMATED: 50

200

What two numbers (10's facts) is 74 in between?

70 and 80

300

65

65 rounded to the nearest 10 is 70

300

217

200

300

102 + 50

ANSWER: 152


ESTIMATED: 150

300

153 - 27

ANSWER: 126


ESTIMATED: 130

300

What number in the middle of 30 and 40?

35

400

144

144 rounded to the nearest 10 is 140

400

888

900

400

216 + 95

ANSWER: 311


ESTIMATED: 310

400

271 - 88

ANSWER: 183


ESTIMATED: 180

400

Draw a number line and plot the number 130, rounded to the nearest 100.

Teacher will check!

500

387

387 rounded to the nearest 10 is 390

500

945

900

500

532 + 57

ANSWER: 589


ESTIMATED: 590

500

843 - 211

ANSWER: 632


ESTIMATED: 630

500
What is the golden rule?

5 or more, let it sore

4 or less, let it rest!

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