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
- 1.50% of ₹310 =
- 2.26² =
- 3.4 + ? = 10
- 4.A film starts at 7:55 and ends at 8:30. How many minutes long is the film?
- 5.27² =
- 6.16² =
- 7.128 ÷ 8 =
- 8.73 laddoos are packed in boxes of 8. How many laddoos are left over?
- 9.50% of ₹620 =
- 10.Best estimate of 17 × 30? (a) 600 (b) 60 (c) 6000
- 11.You buy a box of crayons for ₹95 and pay with a ₹100 note. How much change do you get, in rupees?
- 12.57 × 9 =
- 13.76 + ? = 100
- 14.You buy a water bottle for ₹19 and a pen for ₹28. You pay with a ₹100 note. How much change do you get, in rupees?
- 15.1 + ? = 10
- 16.122 − 97 =
- 17.What is the remainder when 61 is divided by 4?
- 18.Half of 50 =
- 19.9 + 2 =
- 20.Best estimate of 76 × 76? (a) 6400 (b) 64000 (c) 640
- 21.40 − 9 =
- 22.72 ÷ 4 =
- 23.8 + ? = 10
- 24.92 ÷ 4 =
- 25.65 + 34 =
- 26.68 + 51 =
- 27.3 + ? = 10
- 28.91 − 29 =
- 29.124 ÷ 4 =
- 30.Best estimate of 779 + 153? (a) 1000 (b) 1200 (c) 800
- 31.511 − 479 =
- 32.24 + 34 =
- 33.9 + 5 =
- 34.11 + 13 =
- 35.25% of ₹380 =
- 36.520 − 493 =
- 37.5% of ₹100 =
- 38.240 ÷ 8 =
- 39.Best estimate of 154 + 457? (a) 700 (b) 900 (c) 500
- 40.6 + 7 =
Answer key
- 155
- 676
- 6
- 35
- 729
- 256
- 16
- 1
- 310
- 600
- 5
- 513
- 24
- 53
- 9
- 25
- 1
- 25
- 11
- 6400
- 31
- 18
- 2
- 23
- 99
- 119
- 7
- 62
- 31
- 1000
- 32
- 58
- 14
- 24
- 95
- 27
- 5
- 30
- 700
- 13
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths