Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 371 · 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. 1.74 − 9 =
2. 2.25% of ₹40 =
3. 3.39 + 3 =
4. 4.You buy a cricket ball for ₹39 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?
5. 5.You buy a notebook for ₹12 and pay with a ₹100 note. How much change do you get, in rupees?
6. 6.12 × 8 =
7. 7.You buy a pencil box for ₹148 and pay with a ₹500 note. How much change do you get, in rupees?
8. 8.58 − 33 =
9. 9.54 + 84 =
10. 10.73 laddoos are packed in boxes of 5. How many laddoos are left over?
11. 11.12² =
12. 12.36 + 9 =
13. 13.106 − 71 =
14. 14.45 + 78 =
15. 15.26 + 68 =
16. 16.49 − 29 =
17. 17.26 + 27 =
18. 18.17 + 9 =
19. 19.57 × 4 =
20. 20.You start your homework at 2:35 and finish at 5:45. How many minutes did you work?
21. 21.28 × 8 =
22. 22.A film starts at 1:30 and ends at 2:45. How many minutes long is the film?
23. 23.144 ÷ 8 =
24. 24.74 − 64 =
25. 25.10% of ₹130 =
26. 26.58 + 59 =
27. 27.261 ÷ 9 =
28. 28.Half of 160 =
29. 29.26² =
30. 30.226 − 179 =
31. 31.152 ÷ 4 =
32. 32.Best estimate of 36 × 68? (a) 28000 (b) 2800 (c) 280
33. 33.Double 66 =
34. 34.427 ÷ 7 =
35. 35.516 − 497 =
36. 36.5 + ? = 10
37. 37.25% of ₹420 =
38. 38.198 + 99 =
39. 39.Best estimate of 42 × 58? (a) 240 (b) 2400 (c) 24000
40. 40.14 + 15 =

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