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 57 × 28? (a) 18000 (b) 180 (c) 1800
- 2.16² =
- 3.35 + 19 =
- 4.Double 31 =
- 5.6 + 7 =
- 6.28 + 5 =
- 7.38 × 6 =
- 8.21² =
- 9.103 laddoos are packed in boxes of 8. How many laddoos are left over?
- 10.55 × 4 =
- 11.20 × 8 =
- 12.A cricket match starts at 1:15 and the first innings ends at 2:20. How many minutes did the innings last?
- 13.52 − 14 =
- 14.59 laddoos are packed in boxes of 9. How many laddoos are left over?
- 15.65 − 27 =
- 16.Best estimate of 425 + 222? (a) 400 (b) 600 (c) 800
- 17.65 + 7 =
- 18.72 + 83 =
- 19.67 + 5 =
- 20.Best estimate of 42 × 19? (a) 80 (b) 8000 (c) 800
- 21.You start your homework at 2:30 and finish at 5:40. How many minutes did you work?
- 22.168 ÷ 4 =
- 23.56 ÷ 4 =
- 24.79 laddoos are packed in boxes of 9. How many laddoos are left over?
- 25.60 × 4 =
- 26.Double 36 =
- 27.160 ÷ 8 =
- 28.61 − 41 =
- 29.37 + 33 =
- 30.74 × 6 =
- 31.What is the remainder when 46 is divided by 3?
- 32.25% of ₹800 =
- 33.28² =
- 34.158 + 99 =
- 35.593 − 99 =
- 36.71 × 9 =
- 37.52 × 4 =
- 38.12² =
- 39.91 − 41 =
- 40.26 × 9 =
Answer key
- 1800
- 256
- 54
- 62
- 13
- 33
- 228
- 441
- 7
- 220
- 160
- 65
- 38
- 5
- 38
- 600
- 72
- 155
- 72
- 800
- 190
- 42
- 14
- 7
- 240
- 72
- 20
- 20
- 70
- 444
- 1
- 200
- 784
- 257
- 494
- 639
- 208
- 144
- 50
- 234
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths