Show:
Addition to 10
Single Digit Subtraction
Double Digit Subtraction
Three Digit Subtraction
Addition to 100
100

7+2=

9

100

9-4

5

100

12-9

3

100

346-219

127

100

33+66

99

200

2+4=

6

200

2-1

1

200

97-36

61

200

521-396

125

200

25+75

100

300

4+6

10

300

9-4

5

300

42-27

15

300

764-394

370

300

67+31

98

400

2+1=

3

400

8-7

1

400

55-33

22

400

127-119

8

400

31+12

43

500

6+3

9

500

3-3

0

500

99-97

2

500

491-141

350

500

45+39

84