Mental Maths Questions Worksheet for Class 5
How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.
NameDateTime takenScore ___ / 40
- 1.You buy a cricket ball for ₹70 and pay with a ₹100 note. How much change do you get, in rupees?
- 2.Half of 134 =
- 3.Best estimate of 188 + 569? (a) 1000 (b) 600 (c) 800
- 4.Half of 126 =
- 5.29 + 30 =
- 6.125 laddoos are packed in boxes of 8. How many laddoos are left over?
- 7.71 × 5 =
- 8.147 + 99 =
- 9.78 laddoos are packed in boxes of 5. How many laddoos are left over?
- 10.20 × 4 =
- 11.15² =
- 12.520 + 99 =
- 13.96 ÷ 8 =
- 14.264 ÷ 8 =
- 15.87 − 19 =
- 16.Best estimate of 29 × 69? (a) 210 (b) 2100 (c) 21000
- 17.56 + ? = 100
- 18.30 + 29 =
- 19.104 ÷ 8 =
- 20.21 + 14 =
- 21.A train leaves at 7:15 and reaches the next city at 7:45. How many minutes is the journey?
- 22.306 − 291 =
- 23.47 + 9 =
- 24.84 − 27 =
- 25.66 + 14 =
- 26.Best estimate of 154 + 446? (a) 800 (b) 400 (c) 600
- 27.2 + ? = 10
- 28.17 + ? = 100
- 29.Half of 132 =
- 30.58 + 9 =
- 31.67 − 36 =
- 32.510 ÷ 6 =
- 33.62 + 51 =
- 34.49 + 88 =
- 35.203 − 183 =
- 36.67 laddoos are packed in boxes of 5. How many laddoos are left over?
- 37.46 + 19 =
- 38.79 − 48 =
- 39.77 + 18 =
- 40.88 + 3 =
Answer key
- 30
- 67
- 800
- 63
- 59
- 5
- 355
- 246
- 3
- 80
- 225
- 619
- 12
- 33
- 68
- 2100
- 44
- 59
- 13
- 35
- 30
- 15
- 56
- 57
- 80
- 600
- 8
- 83
- 66
- 67
- 31
- 85
- 113
- 137
- 20
- 2
- 65
- 31
- 95
- 91
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths