1-digit Addition
2-digit Addition
2-digit Addition (RG)
2-digit Addition (RG)
Estimation
100
6+4=
10
100
32+14=
46
100
53+59=
112
100

17+24

41

100

25+34

60

200
8+8=
16
200

11+25=

36

200
22+97=
119
200

28+37

65

200

16+58

80

300
9+3
12
300

58+31=

89

300
71+13=
84
300

46+58

104
300

51+49

100

400

6+8=

14
400

43+64=

107

400
88+45=
133
400

65+17

82

400

2+93

90

500

7+9=

16
500
66+12=
78
500
19+33=
52
500

145+29

174

500

28+14

40

M
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