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
- 1.216 ÷ 8 =
- 2.10 + 11 =
- 3.31 + 54 =
- 4.10 + 12 =
- 5.11 + 12 =
- 6.Best estimate of 855 + 485? (a) 1400 (b) 1600 (c) 1200
- 7.14 × 4 =
- 8.Double 91 =
- 9.39 + 4 =
- 10.71 + 22 =
- 11.You start your homework at 7:55 and finish at 10:40. How many minutes did you work?
- 12.36 laddoos are packed in boxes of 7. How many laddoos are left over?
- 13.21 × 8 =
- 14.18 − 9 =
- 15.141 laddoos are packed in boxes of 9. How many laddoos are left over?
- 16.You buy a notebook for ₹41 and a pen for ₹21. You pay with a ₹100 note. How much change do you get, in rupees?
- 17.17² =
- 18.A cricket match starts at 2:15 and the first innings ends at 3:10. How many minutes did the innings last?
- 19.85 children stand in rows of 7. How many full rows can they make?
- 20.10% of ₹860 =
- 21.82 − 75 =
- 22.22 + 24 =
- 23.8 + ? = 10
- 24.25 − 19 =
- 25.5% of ₹830 =
- 26.Best estimate of 351 + 240? (a) 400 (b) 600 (c) 800
- 27.240 ÷ 8 =
- 28.Best estimate of 743 + 328? (a) 800 (b) 1200 (c) 1000
- 29.80 + 42 =
- 30.136 ÷ 8 =
- 31.56 × 4 =
- 32.39 + 3 =
- 33.Best estimate of 76 × 76? (a) 6400 (b) 640 (c) 64000
- 34.48 + 9 =
- 35.104 − 94 =
- 36.55 + 9 =
- 37.Best estimate of 537 + 161? (a) 900 (b) 500 (c) 700
- 38.23 + ? = 100
- 39.You buy a storybook for ₹446 and pay with a ₹500 note. How much change do you get, in rupees?
- 40.31 + 51 =
Answer key
- 27
- 21
- 85
- 22
- 23
- 1400
- 56
- 182
- 43
- 93
- 165
- 1
- 168
- 9
- 6
- 38
- 289
- 55
- 12
- 86
- 7
- 46
- 2
- 6
- 41.5
- 600
- 30
- 1000
- 122
- 17
- 224
- 42
- 6400
- 57
- 10
- 64
- 700
- 77
- 54
- 82
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths