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
- 1.105 ÷ 5 =
- 2.312 ÷ 8 =
- 3.16 − 9 =
- 4.4 + ? = 10
- 5.51 × 6 =
- 6.312 ÷ 6 =
- 7.24 × 8 =
- 8.Best estimate of 435 + 781? (a) 1200 (b) 1000 (c) 1400
- 9.Best estimate of 333 + 348? (a) 400 (b) 600 (c) 800
- 10.What is the remainder when 73 is divided by 6?
- 11.717 + 99 =
- 12.You buy a storybook for ₹21 and pay with a ₹100 note. How much change do you get, in rupees?
- 13.71 × 4 =
- 14.You buy a water bottle for ₹488 and pay with a ₹500 note. How much change do you get, in rupees?
- 15.508 − 494 =
- 16.Double 57 =
- 17.71 + 33 =
- 18.58 − 31 =
- 19.54 × 8 =
- 20.A film starts at 7:05 and ends at 8:35. How many minutes long is the film?
- 21.75 + ? = 100
- 22.100 laddoos are packed in boxes of 7. How many laddoos are left over?
- 23.93 − 45 =
- 24.13² =
- 25.31 + 9 =
- 26.22 × 8 =
- 27.49 + 3 =
- 28.Best estimate of 13 × 96? (a) 1000 (b) 10000 (c) 100
- 29.60 + 81 =
- 30.29² =
- 31.Best estimate of 58 × 28? (a) 18000 (b) 1800 (c) 180
- 32.86 + ? = 100
- 33.96 ÷ 4 =
- 34.65 − 38 =
- 35.15² =
- 36.10% of ₹690 =
- 37.227 − 175 =
- 38.304 ÷ 8 =
- 39.342 ÷ 9 =
- 40.Double 39 =
Answer key
- 21
- 39
- 7
- 6
- 306
- 52
- 192
- 1200
- 600
- 1
- 816
- 79
- 284
- 12
- 14
- 114
- 104
- 27
- 432
- 90
- 25
- 2
- 48
- 169
- 40
- 176
- 52
- 1000
- 141
- 841
- 1800
- 14
- 24
- 27
- 225
- 69
- 52
- 38
- 38
- 78
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths