Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 173 · 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. 1.34 + 87 =
2. 2.10% of ₹90 =
3. 3.11 + 13 =
4. 4.31 + ? = 100
5. 5.846 − 99 =
6. 6.515 − 479 =
7. 7.29 + 3 =
8. 8.80 − 57 =
9. 9.50% of ₹460 =
10. 10.Best estimate of 33 × 94? (a) 27000 (b) 270 (c) 2700
11. 11.You start your homework at 3:15 and finish at 4:50. How many minutes did you work?
12. 12.47 laddoos are packed in boxes of 4. How many laddoos are left over?
13. 13.16 + 18 =
14. 14.21² =
15. 15.A cricket match starts at 7:40 and the first innings ends at 10:35. How many minutes did the innings last?
16. 16.What is the remainder when 23 is divided by 3?
17. 17.63 + 65 =
18. 18.489 − 99 =
19. 19.240 ÷ 8 =
20. 20.40 + 26 =
21. 21.390 ÷ 5 =
22. 22.Half of 46 =
23. 23.A film starts at 2:45 and ends at 3:45. How many minutes long is the film?
24. 24.74 + ? = 100
25. 25.70 + 9 =
26. 26.100 − 74 =
27. 27.A train leaves at 3:35 and reaches the next city at 4:50. How many minutes is the journey?
28. 28.63 children stand in rows of 4. How many full rows can they make?
29. 29.21 + 23 =
30. 30.513 − 480 =
31. 31.288 ÷ 8 =
32. 32.17² =
33. 33.78 + ? = 100
34. 34.10% of ₹890 =
35. 35.57 + 6 =
36. 36.69 − 19 =
37. 37.297 ÷ 3 =
38. 38.532 ÷ 7 =
39. 39.59 × 3 =
40. 40.25 + 9 =

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