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Finding the missing number with subtraction
Finding the missing number with addition
Finding the missing number with multiplication and divison
Rounding
Making two sides of an equation equal one another
100

570-231=_____

339

100

147+132=_______

279

100

40 x 8 = _________

320

100

What is 89 rounded to the nearest ten

90

100

333-100=333-92+____

8

200

757-52=____

705

200

147+54______

201

200

____ x 7=21

3

200

what is 189 rounded to the nearest hundred

200

200

475-100=475-95+___

5

300

720- 430=______

290

300

720+180______

900

300

_____ X 5= 75

15

300

when rounding to the nearest ten, what is the least whole number number that rounds to 70?

65

300

550-100=550-90+____

10

400

650-491=______

159

400

237+185_______

422

400

What unknown number makes the equation true 2 x 3 x______=72

12

400

When rounding to the nearest tens, what is the greatest whole number number that rounds to 90

94

400

670-100=670-80+__

20

500

570-90=500-__

20

500

325+498=________

823

500

What unknown number makes the equation true 5 x 4 x ______=200?

10

500

When rounding to the nearest tens, what is the greatest number that rounds to 200.

204

500

890-100= 890-70+___

30