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
- 1.28 + 4 =
- 2.What is the remainder when 77 is divided by 9?
- 3.Best estimate of 28 × 77? (a) 24000 (b) 240 (c) 2400
- 4.A cricket match starts at 7:25 and the first innings ends at 9:25. How many minutes did the innings last?
- 5.77 + 9 =
- 6.16 + 17 =
- 7.48 × 4 =
- 8.A film starts at 5:05 and ends at 5:40. How many minutes long is the film?
- 9.207 − 99 =
- 10.6 + 7 =
- 11.12² =
- 12.132 ÷ 4 =
- 13.You buy a kite for ₹24 and pay with a ₹100 note. How much change do you get, in rupees?
- 14.25² =
- 15.Best estimate of 24 × 54? (a) 10000 (b) 100 (c) 1000
- 16.224 ÷ 4 =
- 17.16² =
- 18.Best estimate of 86 × 51? (a) 450 (b) 45000 (c) 4500
- 19.6 + ? = 10
- 20.76 − 28 =
- 21.Best estimate of 56 × 19? (a) 1200 (b) 120 (c) 12000
- 22.55 + 9 =
- 23.29 + 30 =
- 24.26 × 8 =
- 25.1003 − 997 =
- 26.58 + 19 =
- 27.315 ÷ 5 =
- 28.5% of ₹460 =
- 29.160 ÷ 8 =
- 30.91 − 16 =
- 31.126 − 80 =
- 32.10% of ₹670 =
- 33.Best estimate of 525 + 122? (a) 400 (b) 600 (c) 800
- 34.Double 74 =
- 35.70 − 17 =
- 36.54 + 58 =
- 37.5% of ₹100 =
- 38.1 + ? = 10
- 39.80 − 36 =
- 40.9 + 11 =
Answer key
- 32
- 5
- 2400
- 120
- 86
- 33
- 192
- 35
- 108
- 13
- 144
- 33
- 76
- 625
- 1000
- 56
- 256
- 4500
- 4
- 48
- 1200
- 64
- 59
- 208
- 6
- 77
- 63
- 23
- 20
- 75
- 46
- 67
- 600
- 148
- 53
- 112
- 5
- 9
- 44
- 20
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths