Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 442 · 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. 1.48 ÷ 4 =
2. 2.210 − 184 =
3. 3.27 laddoos are packed in boxes of 5. How many laddoos are left over?
4. 4.68 + 6 =
5. 5.50% of ₹220 =
6. 6.85 + ? = 100
7. 7.Best estimate of 255 + 856? (a) 1400 (b) 1200 (c) 1000
8. 8.408 ÷ 8 =
9. 9.Best estimate of 58 × 53? (a) 3000 (b) 300 (c) 30000
10. 10.31 × 4 =
11. 11.172 ÷ 4 =
12. 12.71 + 29 =
13. 13.794 − 99 =
14. 14.You buy a storybook for ₹320 and pay with a ₹500 note. How much change do you get, in rupees?
15. 15.208 ÷ 8 =
16. 16.22 laddoos are packed in boxes of 5. How many laddoos are left over?
17. 17.1 + ? = 10
18. 18.87 + 5 =
19. 19.198 ÷ 9 =
20. 20.13 children stand in rows of 3. How many full rows can they make?
21. 21.49 + 81 =
22. 22.Best estimate of 56 × 80? (a) 4800 (b) 480 (c) 48000
23. 23.72 × 7 =
24. 24.96 ÷ 4 =
25. 25.What is the remainder when 105 is divided by 9?
26. 26.67 + 7 =
27. 27.15 × 4 =
28. 28.33 + 19 =
29. 29.87 − 9 =
30. 30.21² =
31. 31.12 + 11 =
32. 32.66 × 4 =
33. 33.41 + 82 =
34. 34.135 ÷ 9 =
35. 35.88 ÷ 8 =
36. 36.13² =
37. 37.91 × 3 =
38. 38.You buy a kite for ₹168 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.61 + ? = 100
40. 40.173 − 99 =

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