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
- 1.87 − 32 =
- 2.25% of ₹580 =
- 3.29 + 51 =
- 4.5% of ₹870 =
- 5.Best estimate of 90 × 56? (a) 540 (b) 54000 (c) 5400
- 6.77 × 4 =
- 7.47 laddoos are packed in boxes of 6. How many laddoos are left over?
- 8.You start your homework at 2:25 and finish at 3:10. How many minutes did you work?
- 9.85 + ? = 100
- 10.76 + 81 =
- 11.16 + ? = 100
- 12.1020 − 987 =
- 13.23 + 29 =
- 14.Half of 186 =
- 15.Best estimate of 20 × 84? (a) 160 (b) 1600 (c) 16000
- 16.91 children stand in rows of 8. How many full rows can they make?
- 17.59 + 72 =
- 18.88 ÷ 8 =
- 19.7 + ? = 10
- 20.Best estimate of 68 × 87? (a) 63000 (b) 6300 (c) 630
- 21.60 laddoos are packed in boxes of 7. How many laddoos are left over?
- 22.78 − 19 =
- 23.37 × 8 =
- 24.You start your homework at 1:45 and finish at 3:30. How many minutes did you work?
- 25.79 − 46 =
- 26.128 ÷ 4 =
- 27.34 × 8 =
- 28.37 + 8 =
- 29.16² =
- 30.84 ÷ 4 =
- 31.25 × 8 =
- 32.A train leaves at 7:35 and reaches the next city at 8:30. How many minutes is the journey?
- 33.80 − 35 =
- 34.36 + 9 =
- 35.You buy a cricket ball for ₹14 and a pen for ₹45. You pay with a ₹100 note. How much change do you get, in rupees?
- 36.59 + 4 =
- 37.204 ÷ 4 =
- 38.29 + 31 =
- 39.26 + ? = 100
- 40.You buy a kite for ₹23 and a pen for ₹44. You pay with a ₹100 note. How much change do you get, in rupees?
Answer key
- 55
- 145
- 80
- 43.5
- 5400
- 308
- 5
- 45
- 15
- 157
- 84
- 33
- 52
- 93
- 1600
- 11
- 131
- 11
- 3
- 6300
- 4
- 59
- 296
- 105
- 33
- 32
- 272
- 45
- 256
- 21
- 200
- 55
- 45
- 45
- 41
- 63
- 51
- 60
- 74
- 33
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths