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.Best estimate of 734 + 442? (a) 900 (b) 1100 (c) 1300
- 2.15² =
- 3.You buy a box of crayons for ₹67 and pay with a ₹100 note. How much change do you get, in rupees?
- 4.512 − 487 =
- 5.Best estimate of 451 + 153? (a) 500 (b) 700 (c) 900
- 6.23 × 4 =
- 7.You start your homework at 6:05 and finish at 6:40. How many minutes did you work?
- 8.55 − 45 =
- 9.Half of 58 =
- 10.236 ÷ 4 =
- 11.63 + 29 =
- 12.47 laddoos are packed in boxes of 3. How many laddoos are left over?
- 13.21 + 64 =
- 14.96 ÷ 8 =
- 15.You start your homework at 3:15 and finish at 3:40. How many minutes did you work?
- 16.16 + ? = 100
- 17.5% of ₹170 =
- 18.796 + 99 =
- 19.26 + 28 =
- 20.79 × 4 =
- 21.60 + ? = 100
- 22.54 − 38 =
- 23.25% of ₹440 =
- 24.46 × 9 =
- 25.Double 78 =
- 26.93 − 43 =
- 27.Best estimate of 36 × 61? (a) 24000 (b) 2400 (c) 240
- 28.28 + 12 =
- 29.529 − 495 =
- 30.A cricket match starts at 4:40 and the first innings ends at 7:40. How many minutes did the innings last?
- 31.25% of ₹560 =
- 32.49 + ? = 100
- 33.51 − 29 =
- 34.33 × 8 =
- 35.99 − 71 =
- 36.76 − 29 =
- 37.768 ÷ 8 =
- 38.5% of ₹620 =
- 39.92 laddoos are packed in boxes of 6. How many laddoos are left over?
- 40.16² =
Answer key
- 1100
- 225
- 33
- 25
- 700
- 92
- 35
- 10
- 29
- 59
- 92
- 2
- 85
- 12
- 25
- 84
- 8.5
- 895
- 54
- 316
- 40
- 16
- 110
- 414
- 156
- 50
- 2400
- 40
- 34
- 180
- 140
- 51
- 22
- 264
- 28
- 47
- 96
- 31
- 2
- 256
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths