Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 675 · 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. 1.9 + 7 =
2. 2.51 children stand in rows of 4. How many full rows can they make?
3. 3.9 + ? = 10
4. 4.2 + ? = 10
5. 5.49 children stand in rows of 8. How many full rows can they make?
6. 6.43 laddoos are packed in boxes of 5. How many laddoos are left over?
7. 7.3 + ? = 10
8. 8.Half of 58 =
9. 9.52 − 9 =
10. 10.32 − 9 =
11. 11.Double 46 =
12. 12.70 + 21 =
13. 13.You buy a kite for ₹95 and pay with a ₹100 note. How much change do you get, in rupees?
14. 14.455 ÷ 5 =
15. 15.522 − 489 =
16. 16.A film starts at 2:25 and ends at 3:30. How many minutes long is the film?
17. 17.111 laddoos are packed in boxes of 8. How many laddoos are left over?
18. 18.37 × 4 =
19. 19.81 − 63 =
20. 20.88 − 73 =
21. 21.50% of ₹160 =
22. 22.152 ÷ 4 =
23. 23.76 + 84 =
24. 24.59 + 9 =
25. 25.50 × 4 =
26. 26.201 − 195 =
27. 27.36 × 8 =
28. 28.You buy a storybook for ₹21 and a pen for ₹45. You pay with a ₹100 note. How much change do you get, in rupees?
29. 29.10% of ₹800 =
30. 30.69 − 51 =
31. 31.75 × 4 =
32. 32.1 + ? = 10
33. 33.97 − 61 =
34. 34.Best estimate of 829 + 532? (a) 1100 (b) 1500 (c) 1300
35. 35.You start your homework at 8:15 and finish at 8:55. How many minutes did you work?
36. 36.66 − 36 =
37. 37.168 ÷ 8 =
38. 38.75 + 7 =
39. 39.81 × 4 =
40. 40.70 − 39 =

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