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
- 1.27 + 53 =
- 2.34 + 58 =
- 3.43 + 19 =
- 4.80 + 54 =
- 5.44 + 31 =
- 6.29 + 58 =
- 7.77 + 45 =
- 8.50 + 57 =
- 9.32 + 82 =
- 10.46 + 66 =
- 11.21 + 19 =
- 12.37 + 65 =
- 13.28 + 14 =
- 14.29 + 54 =
- 15.36 + 27 =
- 16.81 + 75 =
- 17.75 + 41 =
- 18.50 + 67 =
- 19.27 + 56 =
- 20.52 + 12 =
- 21.69 + 22 =
- 22.58 + 49 =
- 23.70 + 71 =
- 24.39 + 71 =
- 25.52 + 34 =
- 26.57 + 75 =
- 27.77 + 23 =
- 28.72 + 73 =
- 29.41 + 27 =
- 30.25 + 75 =
- 31.74 + 27 =
- 32.55 + 77 =
- 33.51 + 82 =
- 34.48 + 31 =
- 35.47 + 71 =
- 36.62 + 15 =
- 37.29 + 76 =
- 38.82 + 21 =
- 39.32 + 77 =
- 40.28 + 67 =
Answer key
- 80
- 92
- 62
- 134
- 75
- 87
- 122
- 107
- 114
- 112
- 40
- 102
- 42
- 83
- 63
- 156
- 116
- 117
- 83
- 64
- 91
- 107
- 141
- 110
- 86
- 132
- 100
- 145
- 68
- 100
- 101
- 132
- 133
- 79
- 118
- 77
- 105
- 103
- 109
- 95
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths