Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 488 · 40 questions

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.

1. 1.315 − 99 =
2. 2.You buy a kite for ₹28 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
3. 3.77 − 9 =
4. 4.68 × 4 =
5. 5.120 ÷ 8 =
6. 6.5% of ₹80 =
7. 7.20 × 4 =
8. 8.You buy a water bottle for ₹241 and pay with a ₹500 note. How much change do you get, in rupees?
9. 9.23 + 53 =
10. 10.You buy a water bottle for ₹29 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
11. 11.25% of ₹150 =
12. 12.52 × 6 =
13. 13.9 + 8 =
14. 14.81 laddoos are packed in boxes of 8. How many laddoos are left over?
15. 15.94 − 81 =
16. 16.521 − 490 =
17. 17.21 + 21 =
18. 18.Best estimate of 847 + 331? (a) 1100 (b) 1300 (c) 900
19. 19.14² =
20. 20.56 ÷ 4 =
21. 21.What is the remainder when 69 is divided by 5?
22. 22.315 ÷ 9 =
23. 23.35 + 8 =
24. 24.8 + 10 =
25. 25.62 × 6 =
26. 26.88 + 12 =
27. 27.35 × 3 =
28. 28.A film starts at 8:30 and ends at 10:00. How many minutes long is the film?
29. 29.40 + 29 =
30. 30.16² =
31. 31.25% of ₹130 =
32. 32.54 × 4 =
33. 33.Best estimate of 48 × 90? (a) 4500 (b) 450 (c) 45000
34. 34.16 + 7 =
35. 35.You buy a box of crayons for ₹66 and pay with a ₹100 note. How much change do you get, in rupees?
36. 36.A film starts at 7:50 and ends at 8:40. How many minutes long is the film?
37. 37.67 − 47 =
38. 38.5% of ₹110 =
39. 39.Best estimate of 63 × 36? (a) 2400 (b) 24000 (c) 240
40. 40.13 + 15 =

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