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
- 1.23 + 72 =
- 2.53 + 55 =
- 3.84 + 41 =
- 4.46 + 22 =
- 5.21 + 32 =
- 6.87 + 39 =
- 7.34 + 51 =
- 8.22 + 44 =
- 9.49 + 19 =
- 10.38 + 78 =
- 11.41 + 76 =
- 12.31 + 79 =
- 13.23 + 33 =
- 14.80 + 86 =
- 15.60 + 73 =
- 16.76 + 54 =
- 17.82 + 84 =
- 18.50 + 51 =
- 19.75 + 85 =
- 20.43 + 24 =
- 21.28 + 71 =
- 22.37 + 53 =
- 23.82 + 81 =
- 24.34 + 24 =
- 25.84 + 43 =
- 26.52 + 55 =
- 27.58 + 71 =
- 28.74 + 56 =
- 29.49 + 84 =
- 30.41 + 74 =
- 31.53 + 58 =
- 32.30 + 82 =
- 33.89 + 41 =
- 34.46 + 77 =
- 35.24 + 48 =
- 36.54 + 14 =
- 37.21 + 25 =
- 38.27 + 31 =
- 39.21 + 44 =
- 40.38 + 18 =
Answer key
- 95
- 108
- 125
- 68
- 53
- 126
- 85
- 66
- 68
- 116
- 117
- 110
- 56
- 166
- 133
- 130
- 166
- 101
- 160
- 67
- 99
- 90
- 163
- 58
- 127
- 107
- 129
- 130
- 133
- 115
- 111
- 112
- 130
- 123
- 72
- 68
- 46
- 58
- 65
- 56
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths