Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 586 · 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. 1.97 − 77 =
2. 2.Half of 52 =
3. 3.Best estimate of 67 × 23? (a) 1400 (b) 14000 (c) 140
4. 4.136 ÷ 4 =
5. 5.78 + 5 =
6. 6.Best estimate of 229 + 424? (a) 400 (b) 800 (c) 600
7. 7.78 + 37 =
8. 8.318 − 99 =
9. 9.25² =
10. 10.Half of 58 =
11. 11.19² =
12. 12.53 × 4 =
13. 13.48 laddoos are packed in boxes of 9. How many laddoos are left over?
14. 14.322 ÷ 7 =
15. 15.39 + 85 =
16. 16.You buy a box of crayons for ₹231 and pay with a ₹500 note. How much change do you get, in rupees?
17. 17.25% of ₹660 =
18. 18.3 + ? = 10
19. 19.25 laddoos are packed in boxes of 4. How many laddoos are left over?
20. 20.14 children stand in rows of 3. How many full rows can they make?
21. 21.208 ÷ 4 =
22. 22.60 + 37 =
23. 23.69 − 18 =
24. 24.71 + ? = 100
25. 25.39 × 4 =
26. 26.26 × 8 =
27. 27.What is the remainder when 121 is divided by 8?
28. 28.A film starts at 2:20 and ends at 4:55. How many minutes long is the film?
29. 29.31 laddoos are packed in boxes of 6. How many laddoos are left over?
30. 30.What is the remainder when 58 is divided by 4?
31. 31.37 + ? = 100
32. 32.1 + ? = 10
33. 33.228 ÷ 3 =
34. 34.168 ÷ 8 =
35. 35.98 − 23 =
36. 36.25% of ₹480 =
37. 37.63 − 41 =
38. 38.10 + 9 =
39. 39.50% of ₹140 =
40. 40.5 + ? = 10

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