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
- 1.14² =
- 2.24² =
- 3.5% of ₹140 =
- 4.21² =
- 5.304 ÷ 8 =
- 6.4 + ? = 10
- 7.3 + ? = 10
- 8.18 + 19 =
- 9.77 × 7 =
- 10.135 ÷ 5 =
- 11.10% of ₹170 =
- 12.65 − 42 =
- 13.105 ÷ 3 =
- 14.73 × 9 =
- 15.26 + 7 =
- 16.55 − 44 =
- 17.Best estimate of 688 + 611? (a) 1100 (b) 1300 (c) 1500
- 18.46 + 6 =
- 19.29 + 26 =
- 20.Best estimate of 349 + 436? (a) 700 (b) 500 (c) 900
- 21.5 + ? = 10
- 22.87 × 8 =
- 23.50 + 58 =
- 24.80 + 43 =
- 25.72 ÷ 4 =
- 26.341 − 99 =
- 27.58 + 4 =
- 28.A cricket match starts at 8:40 and the first innings ends at 9:25. How many minutes did the innings last?
- 29.43 × 8 =
- 30.You buy a bag of mangoes for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
- 31.57 − 47 =
- 32.58 + 7 =
- 33.A film starts at 3:20 and ends at 6:05. How many minutes long is the film?
- 34.50 × 4 =
- 35.66 × 3 =
- 36.22 + 23 =
- 37.48 + 9 =
- 38.You buy a notebook for ₹61 and pay with a ₹100 note. How much change do you get, in rupees?
- 39.Best estimate of 73 × 71? (a) 49000 (b) 4900 (c) 490
- 40.58 + 9 =
Answer key
- 196
- 576
- 7
- 441
- 38
- 6
- 7
- 37
- 539
- 27
- 17
- 23
- 35
- 657
- 33
- 11
- 1300
- 52
- 55
- 700
- 5
- 696
- 108
- 123
- 18
- 242
- 62
- 45
- 344
- 27
- 10
- 65
- 165
- 200
- 198
- 45
- 57
- 39
- 4900
- 67
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths