Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 283 · 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.Half of 104 =
2. 2.23 + 24 =
3. 3.73 × 3 =
4. 4.7 + 9 =
5. 5.66 + 8 =
6. 6.84 × 4 =
7. 7.429 + 99 =
8. 8.30 + 32 =
9. 9.39 + 5 =
10. 10.28 × 4 =
11. 11.18 + 6 =
12. 12.You buy a box of crayons for ₹121 and pay with a ₹500 note. How much change do you get, in rupees?
13. 13.200 ÷ 8 =
14. 14.34 + 28 =
15. 15.88 × 5 =
16. 16.26² =
17. 17.Best estimate of 37 × 14? (a) 400 (b) 40 (c) 4000
18. 18.You buy a storybook for ₹60 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.8 + 5 =
20. 20.55 + 29 =
21. 21.112 ÷ 4 =
22. 22.28 + 27 =
23. 23.Best estimate of 327 + 638? (a) 700 (b) 900 (c) 1100
24. 24.83 × 7 =
25. 25.25% of ₹790 =
26. 26.12 × 8 =
27. 27.What is the remainder when 43 is divided by 4?
28. 28.10% of ₹730 =
29. 29.1026 − 982 =
30. 30.1001 − 983 =
31. 31.28² =
32. 32.217 − 194 =
33. 33.24 × 8 =
34. 34.66 − 28 =
35. 35.15² =
36. 36.11² =
37. 37.80 − 28 =
38. 38.51 children stand in rows of 5. How many full rows can they make?
39. 39.31 × 6 =
40. 40.What is the remainder when 97 is divided by 9?

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