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.Half of 140 =
- 2.49 + 9 =
- 3.You buy a storybook for ₹11 and a pen for ₹42. You pay with a ₹100 note. How much change do you get, in rupees?
- 4.12² =
- 5.29 + 28 =
- 6.50% of ₹640 =
- 7.11² =
- 8.A cricket match starts at 2:40 and the first innings ends at 4:25. How many minutes did the innings last?
- 9.49 + ? = 100
- 10.15² =
- 11.You buy a bag of mangoes for ₹386 and pay with a ₹500 note. How much change do you get, in rupees?
- 12.48 + 3 =
- 13.47 children stand in rows of 7. How many full rows can they make?
- 14.Best estimate of 36 × 18? (a) 800 (b) 8000 (c) 80
- 15.385 ÷ 5 =
- 16.73 − 21 =
- 17.38 + 3 =
- 18.A film starts at 5:10 and ends at 5:55. How many minutes long is the film?
- 19.229 − 176 =
- 20.36 + 6 =
- 21.45 × 4 =
- 22.28 + 18 =
- 23.23 laddoos are packed in boxes of 4. How many laddoos are left over?
- 24.13 + 14 =
- 25.34 + 72 =
- 26.264 ÷ 8 =
- 27.198 ÷ 6 =
- 28.110 ÷ 5 =
- 29.46 + 28 =
- 30.128 ÷ 8 =
- 31.You start your homework at 8:50 and finish at 11:55. How many minutes did you work?
- 32.120 ÷ 8 =
- 33.70 + 19 =
- 34.76 + 9 =
- 35.154 ÷ 7 =
- 36.73 × 4 =
- 37.30 + 71 =
- 38.Double 49 =
- 39.10% of ₹70 =
- 40.79 × 3 =
Answer key
- 70
- 58
- 47
- 144
- 57
- 320
- 121
- 105
- 51
- 225
- 114
- 51
- 6
- 800
- 77
- 52
- 41
- 45
- 53
- 42
- 180
- 46
- 3
- 27
- 106
- 33
- 33
- 22
- 74
- 16
- 185
- 15
- 89
- 85
- 22
- 292
- 101
- 98
- 7
- 237
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths