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Addition?
Subtract!
More Addition!
Place Value!
More Subtraction
Multiplication
10

50 + 50 + 10

110

10

Mental Math

60 - 10 = 

50

10

98 + 499 = 

597

10

How many tens

784

8

10

99-10=

89

10

8 x 7 =

56

100

100 + 900 =


1000

100

15 - 9

6

100

345 + 134 = 

479

100

How many ones in 405

5

100

100-25=

75

100

9 x 5 

45

200

800 + 263

1,063

200

562-100

462

200

155 + 245 = ? 

400

200

2x2

4

200

350-45=

305

200

12 x 5 = 

60

300

865 + 10

875

300

649-349

349

300

10 + ___ = 241

231

300

3x5

15

300

500-150=

350

300

74 x 3

222

400

1048 + 200 =

1248

400

250-175

75

400

37 + 63 = 

100

400

How many tens in this the number 24?

2 tens

400

999-610=

389

400

98 x 7

686