Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 46 · 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.Best estimate of 724 + 591? (a) 1300 (b) 1500 (c) 1100
2. 2.76 + 52 =
3. 3.Best estimate of 82 × 60? (a) 4800 (b) 48000 (c) 480
4. 4.21 children stand in rows of 4. How many full rows can they make?
5. 5.You buy a storybook for ₹16 and pay with a ₹100 note. How much change do you get, in rupees?
6. 6.A film starts at 5:10 and ends at 7:15. How many minutes long is the film?
7. 7.28 × 8 =
8. 8.376 + 99 =
9. 9.59 − 12 =
10. 10.Best estimate of 16 × 86? (a) 180 (b) 18000 (c) 1800
11. 11.65 − 48 =
12. 12.65 + 9 =
13. 13.57 × 6 =
14. 14.8 + ? = 10
15. 15.50% of ₹150 =
16. 16.2 + ? = 10
17. 17.Double 76 =
18. 18.285 ÷ 3 =
19. 19.180 ÷ 4 =
20. 20.50% of ₹90 =
21. 21.27 + 6 =
22. 22.6 + 7 =
23. 23.70 − 46 =
24. 24.Double 95 =
25. 25.Half of 60 =
26. 26.50% of ₹700 =
27. 27.192 ÷ 6 =
28. 28.35 + ? = 100
29. 29.55 + 12 =
30. 30.23 + 81 =
31. 31.176 ÷ 8 =
32. 32.84 − 19 =
33. 33.Best estimate of 66 × 22? (a) 14000 (b) 140 (c) 1400
34. 34.21 × 8 =
35. 35.15 + 16 =
36. 36.Best estimate of 86 × 26? (a) 270 (b) 27000 (c) 2700
37. 37.5% of ₹430 =
38. 38.Double 21 =
39. 39.A film starts at 5:45 and ends at 7:25. How many minutes long is the film?
40. 40.13² =

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