Show:
Addition
Subtraction
Hard Addition
Hard Subtraction
Skip Counting
100

5+5

10

100

15-4

11
100

9+9

18

100

28-9

19

100

Skip count by 2s till 8.

2, 4, 6, 8

200

20+30

50

200

27-3

24

200

16+17

33

200

45-13

32

200

Skip count by 3s till 15

3, 6, 9, 12, 15

300

400+500

900

300

39-7

32

300

45+10

55

300

321-123

198

300

Skip count by 4s till 16.

4, 8, 12, 16

400

1000+6000

7000

400

50-5

45

400

89+3

92

400

17-8

9

400

Skip count count by 6s to 18

6, 12, 18

500

72+24

96

500

65-1

64

500

3735+112

3847

500

9-9

0

500

Skip count by 9s till 72

9, 18, 27, 36, 45, 54, 63, 72