Addition w/regrouping
Subtraction w/o regrouping
Subtraction w/ regrouping
100

18+14

32

100

47-16

31

100

23-17

6

200

76+26

102

200

123-23

100

200

55-37

18

300

123+47

170

300

145-24

121

300

129-59

69

400

145+46

191

400

189-47

142

400

142-66

76

500

139+45

184

500

139-26

113

500

167-94

73