Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 766 · 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. 1.55 × 4 =
2. 2.4 + ? = 10
3. 3.81 × 5 =
4. 4.18² =
5. 5.Best estimate of 421 + 540? (a) 700 (b) 1100 (c) 900
6. 6.A film starts at 2:30 and ends at 3:50. How many minutes long is the film?
7. 7.11 + ? = 100
8. 8.113 − 80 =
9. 9.50% of ₹740 =
10. 10.38 laddoos are packed in boxes of 8. How many laddoos are left over?
11. 11.256 ÷ 8 =
12. 12.62 − 12 =
13. 13.68 − 13 =
14. 14.53 laddoos are packed in boxes of 5. How many laddoos are left over?
15. 15.17 + 16 =
16. 16.50% of ₹40 =
17. 17.21 + 20 =
18. 18.88 + ? = 100
19. 19.289 − 99 =
20. 20.16 + 17 =
21. 21.Half of 188 =
22. 22.21 + 28 =
23. 23.45 + 53 =
24. 24.61 + 73 =
25. 25.25 + 27 =
26. 26.206 − 193 =
27. 27.64 − 28 =
28. 28.70 + ? = 100
29. 29.15 × 8 =
30. 30.1018 − 989 =
31. 31.9 + 9 =
32. 32.25% of ₹50 =
33. 33.39 + 86 =
34. 34.What is the remainder when 40 is divided by 9?
35. 35.9 + 8 =
36. 36.6 + 8 =
37. 37.You buy a storybook for ₹24 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.15 + 8 =
39. 39.A film starts at 5:50 and ends at 9:00. How many minutes long is the film?
40. 40.You buy a storybook for ₹20 and pay with a ₹100 note. How much change do you get, in rupees?

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