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
- 1.75 + 22 =
- 2.81 + 36 =
- 3.25 + 67 =
- 4.31 + 35 =
- 5.43 + 19 =
- 6.45 + 84 =
- 7.47 + 81 =
- 8.26 + 29 =
- 9.66 + 32 =
- 10.31 + 84 =
- 11.56 + 41 =
- 12.87 + 84 =
- 13.56 + 68 =
- 14.21 + 63 =
- 15.71 + 51 =
- 16.45 + 34 =
- 17.27 + 69 =
- 18.46 + 26 =
- 19.66 + 62 =
- 20.83 + 53 =
- 21.72 + 38 =
- 22.58 + 59 =
- 23.64 + 71 =
- 24.35 + 74 =
- 25.61 + 44 =
- 26.70 + 25 =
- 27.57 + 56 =
- 28.53 + 73 =
- 29.75 + 71 =
- 30.35 + 33 =
- 31.55 + 68 =
- 32.41 + 13 =
- 33.49 + 24 =
- 34.42 + 43 =
- 35.21 + 27 =
- 36.85 + 61 =
- 37.77 + 25 =
- 38.83 + 37 =
- 39.56 + 44 =
- 40.44 + 53 =
Answer key
- 97
- 117
- 92
- 66
- 62
- 129
- 128
- 55
- 98
- 115
- 97
- 171
- 124
- 84
- 122
- 79
- 96
- 72
- 128
- 136
- 110
- 117
- 135
- 109
- 105
- 95
- 113
- 126
- 146
- 68
- 123
- 54
- 73
- 85
- 48
- 146
- 102
- 120
- 100
- 97
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths