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
- 1.77 + ? = 100
- 2.302 − 296 =
- 3.You buy a bag of mangoes for ₹29 and a pen for ₹40. You pay with a ₹100 note. How much change do you get, in rupees?
- 4.63 ÷ 3 =
- 5.5% of ₹880 =
- 6.You start your homework at 3:45 and finish at 6:45. How many minutes did you work?
- 7.86 + 5 =
- 8.104 ÷ 4 =
- 9.86 − 19 =
- 10.256 ÷ 8 =
- 11.511 ÷ 7 =
- 12.55 + 8 =
- 13.570 ÷ 6 =
- 14.224 ÷ 8 =
- 15.47 children stand in rows of 4. How many full rows can they make?
- 16.59 + 19 =
- 17.12 + 13 =
- 18.432 ÷ 9 =
- 19.4 + ? = 10
- 20.571 + 99 =
- 21.93 laddoos are packed in boxes of 9. How many laddoos are left over?
- 22.2 + ? = 10
- 23.39 + 6 =
- 24.Double 71 =
- 25.Best estimate of 76 × 73? (a) 560 (b) 5600 (c) 56000
- 26.30 + 32 =
- 27.17² =
- 28.58 + 7 =
- 29.75 + 63 =
- 30.Double 54 =
- 31.128 ÷ 8 =
- 32.25 children stand in rows of 3. How many full rows can they make?
- 33.12 × 8 =
- 34.99 − 51 =
- 35.5 + ? = 10
- 36.Half of 62 =
- 37.25 + 24 =
- 38.89 + 56 =
- 39.Best estimate of 798 + 784? (a) 1600 (b) 1800 (c) 1400
- 40.324 − 99 =
Answer key
- 23
- 6
- 31
- 21
- 44
- 180
- 91
- 26
- 67
- 32
- 73
- 63
- 95
- 28
- 11
- 78
- 25
- 48
- 6
- 670
- 3
- 8
- 45
- 142
- 5600
- 62
- 289
- 65
- 138
- 108
- 16
- 8
- 96
- 48
- 5
- 31
- 49
- 145
- 1600
- 225
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths