Mental Addition Worksheet for Class 2 and 3
How to do it in your head (Tens first): Keep the first number as it is. Add the tens of the second number. Add the ones.
NameDateTime takenScore ___ / 40
- 1.61 + 71 =
- 2.21 + 54 =
- 3.21 + 85 =
- 4.64 + 87 =
- 5.84 + 17 =
- 6.89 + 46 =
- 7.82 + 81 =
- 8.63 + 71 =
- 9.89 + 76 =
- 10.23 + 53 =
- 11.80 + 56 =
- 12.49 + 42 =
- 13.36 + 28 =
- 14.82 + 51 =
- 15.75 + 89 =
- 16.29 + 48 =
- 17.89 + 48 =
- 18.77 + 48 =
- 19.70 + 89 =
- 20.23 + 78 =
- 21.81 + 37 =
- 22.83 + 21 =
- 23.38 + 74 =
- 24.79 + 37 =
- 25.88 + 66 =
- 26.74 + 79 =
- 27.64 + 21 =
- 28.33 + 32 =
- 29.40 + 17 =
- 30.23 + 29 =
- 31.73 + 46 =
- 32.88 + 42 =
- 33.60 + 53 =
- 34.78 + 83 =
- 35.22 + 71 =
- 36.56 + 71 =
- 37.71 + 27 =
- 38.64 + 84 =
- 39.41 + 25 =
- 40.53 + 19 =
Answer key
- 132
- 75
- 106
- 151
- 101
- 135
- 163
- 134
- 165
- 76
- 136
- 91
- 64
- 133
- 164
- 77
- 137
- 125
- 159
- 101
- 118
- 104
- 112
- 116
- 154
- 153
- 85
- 65
- 57
- 52
- 119
- 130
- 113
- 161
- 93
- 127
- 98
- 148
- 66
- 72
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths