Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 24 · 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. 1.60 + 71 =
2. 2.76 + 6 =
3. 3.Best estimate of 62 × 81? (a) 48000 (b) 4800 (c) 480
4. 4.1022 − 996 =
5. 5.553 ÷ 7 =
6. 6.Double 84 =
7. 7.51 + 53 =
8. 8.33 × 8 =
9. 9.201 − 198 =
10. 10.33 + 66 =
11. 11.71 × 7 =
12. 12.54 + 58 =
13. 13.649 − 99 =
14. 14.65 − 45 =
15. 15.28 × 8 =
16. 16.25% of ₹660 =
17. 17.54 + 19 =
18. 18.45 + 86 =
19. 19.You start your homework at 5:15 and finish at 6:25. How many minutes did you work?
20. 20.16 × 8 =
21. 21.54 children stand in rows of 5. How many full rows can they make?
22. 22.You buy a storybook for ₹414 and pay with a ₹500 note. How much change do you get, in rupees?
23. 23.17 + 18 =
24. 24.50 − 9 =
25. 25.What is the remainder when 16 is divided by 3?
26. 26.33 children stand in rows of 5. How many full rows can they make?
27. 27.25² =
28. 28.7 + 6 =
29. 29.What is the remainder when 28 is divided by 3?
30. 30.A cricket match starts at 2:10 and the first innings ends at 4:55. How many minutes did the innings last?
31. 31.7 + ? = 10
32. 32.148 ÷ 4 =
33. 33.A train leaves at 1:00 and reaches the next city at 3:10. How many minutes is the journey?
34. 34.232 ÷ 4 =
35. 35.20 × 4 =
36. 36.12 × 8 =
37. 37.99 × 9 =
38. 38.Best estimate of 13 × 66? (a) 700 (b) 7000 (c) 70
39. 39.511 − 497 =
40. 40.50% of ₹410 =

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