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
- 1.75 ÷ 3 =
- 2.Best estimate of 26 × 57? (a) 180 (b) 1800 (c) 18000
- 3.12 + 13 =
- 4.202 − 183 =
- 5.89 + 19 =
- 6.25 + 29 =
- 7.Best estimate of 52 × 27? (a) 15000 (b) 1500 (c) 150
- 8.62 × 4 =
- 9.281 + 99 =
- 10.5 + ? = 10
- 11.26 + 21 =
- 12.210 − 191 =
- 13.A cricket match starts at 8:10 and the first innings ends at 9:50. How many minutes did the innings last?
- 14.10% of ₹750 =
- 15.14 + 16 =
- 16.34 × 6 =
- 17.A cricket match starts at 8:35 and the first innings ends at 11:10. How many minutes did the innings last?
- 18.204 ÷ 4 =
- 19.53 − 38 =
- 20.Best estimate of 20 × 69? (a) 140 (b) 14000 (c) 1400
- 21.Half of 142 =
- 22.384 ÷ 4 =
- 23.Best estimate of 267 + 206? (a) 500 (b) 700 (c) 300
- 24.Double 54 =
- 25.A film starts at 5:25 and ends at 7:45. How many minutes long is the film?
- 26.95 laddoos are packed in boxes of 7. How many laddoos are left over?
- 27.152 ÷ 4 =
- 28.Best estimate of 246 + 626? (a) 1000 (b) 600 (c) 800
- 29.82 × 9 =
- 30.485 + 99 =
- 31.43 + ? = 100
- 32.84 − 31 =
- 33.Half of 94 =
- 34.96 − 69 =
- 35.121 − 96 =
- 36.14 × 4 =
- 37.41 × 8 =
- 38.60 − 9 =
- 39.A cricket match starts at 8:00 and the first innings ends at 9:25. How many minutes did the innings last?
- 40.19 + 29 =
Answer key
- 25
- 1800
- 25
- 19
- 108
- 54
- 1500
- 248
- 380
- 5
- 47
- 19
- 100
- 75
- 30
- 204
- 155
- 51
- 15
- 1400
- 71
- 96
- 500
- 108
- 140
- 4
- 38
- 800
- 738
- 584
- 57
- 53
- 47
- 27
- 25
- 56
- 328
- 51
- 85
- 48
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths