Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 642 · 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. 1.126 ÷ 9 =
2. 2.783 + 99 =
3. 3.33 × 8 =
4. 4.102 − 80 =
5. 5.52 ÷ 4 =
6. 6.96 − 52 =
7. 7.92 − 31 =
8. 8.2 + ? = 10
9. 9.You start your homework at 7:45 and finish at 8:50. How many minutes did you work?
10. 10.33 + 61 =
11. 11.74 − 29 =
12. 12.Half of 48 =
13. 13.83 − 21 =
14. 14.9 + 4 =
15. 15.54 + 61 =
16. 16.144 ÷ 4 =
17. 17.56 + 22 =
18. 18.Best estimate of 173 + 566? (a) 600 (b) 1000 (c) 800
19. 19.48 × 4 =
20. 20.27 × 8 =
21. 21.69 + 4 =
22. 22.38 × 8 =
23. 23.25 + 34 =
24. 24.99 − 68 =
25. 25.You start your homework at 6:40 and finish at 9:45. How many minutes did you work?
26. 26.44 + 68 =
27. 27.24² =
28. 28.70 − 16 =
29. 29.What is the remainder when 71 is divided by 5?
30. 30.31 + 29 =
31. 31.A train leaves at 1:00 and reaches the next city at 3:50. How many minutes is the journey?
32. 32.358 − 99 =
33. 33.A film starts at 8:20 and ends at 9:15. How many minutes long is the film?
34. 34.83 − 51 =
35. 35.10% of ₹780 =
36. 36.Best estimate of 92 × 67? (a) 63000 (b) 6300 (c) 630
37. 37.105 ÷ 3 =
38. 38.39 laddoos are packed in boxes of 4. How many laddoos are left over?
39. 39.87 × 6 =
40. 40.21 × 8 =

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