Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 651 · 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.What is the remainder when 76 is divided by 6?
2. 2.6 + ? = 10
3. 3.What is the remainder when 25 is divided by 3?
4. 4.212 ÷ 4 =
5. 5.Best estimate of 41 × 76? (a) 3200 (b) 320 (c) 32000
6. 6.48 + ? = 100
7. 7.Best estimate of 31 × 26? (a) 90 (b) 900 (c) 9000
8. 8.172 ÷ 4 =
9. 9.87 × 5 =
10. 10.Double 81 =
11. 11.8 + ? = 10
12. 12.21 + 20 =
13. 13.30 + 32 =
14. 14.7 + 6 =
15. 15.76 ÷ 4 =
16. 16.117 ÷ 9 =
17. 17.160 ÷ 4 =
18. 18.21 + 23 =
19. 19.Best estimate of 47 × 72? (a) 3500 (b) 350 (c) 35000
20. 20.18 + 7 =
21. 21.15² =
22. 22.A film starts at 1:40 and ends at 2:55. How many minutes long is the film?
23. 23.11 + 13 =
24. 24.You start your homework at 3:30 and finish at 4:00. How many minutes did you work?
25. 25.A film starts at 2:55 and ends at 3:55. How many minutes long is the film?
26. 26.41 laddoos are packed in boxes of 6. How many laddoos are left over?
27. 27.48 × 3 =
28. 28.49 + 2 =
29. 29.16 + 8 =
30. 30.A train leaves at 8:15 and reaches the next city at 10:55. How many minutes is the journey?
31. 31.1005 − 992 =
32. 32.63 ÷ 3 =
33. 33.444 ÷ 6 =
34. 34.Best estimate of 24 × 21? (a) 40 (b) 4000 (c) 400
35. 35.58 − 44 =
36. 36.205 − 180 =
37. 37.104 ÷ 4 =
38. 38.Best estimate of 46 × 40? (a) 2000 (b) 20000 (c) 200
39. 39.You buy a storybook for ₹93 and pay with a ₹100 note. How much change do you get, in rupees?
40. 40.35 × 3 =

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