Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 176 · 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.A film starts at 7:40 and ends at 10:40. How many minutes long is the film?
2. 2.86 + 9 =
3. 3.27 + 65 =
4. 4.25 × 8 =
5. 5.43 × 3 =
6. 6.31 + 13 =
7. 7.You buy a box of crayons for ₹20 and pay with a ₹100 note. How much change do you get, in rupees?
8. 8.322 − 295 =
9. 9.Half of 122 =
10. 10.Best estimate of 81 × 34? (a) 24000 (b) 2400 (c) 240
11. 11.You buy a kite for ₹43 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
12. 12.A cricket match starts at 5:30 and the first innings ends at 8:35. How many minutes did the innings last?
13. 13.86 + 22 =
14. 14.82 − 63 =
15. 15.515 − 480 =
16. 16.10% of ₹200 =
17. 17.5 + ? = 10
18. 18.5% of ₹350 =
19. 19.510 − 488 =
20. 20.156 ÷ 4 =
21. 21.37 laddoos are packed in boxes of 4. How many laddoos are left over?
22. 22.17 + 18 =
23. 23.A film starts at 1:35 and ends at 3:45. How many minutes long is the film?
24. 24.46 − 9 =
25. 25.384 ÷ 8 =
26. 26.65 − 9 =
27. 27.85 + 73 =
28. 28.18 + 19 =
29. 29.320 − 291 =
30. 30.40 × 4 =
31. 31.16 + 17 =
32. 32.53 − 39 =
33. 33.You buy a pencil box for ₹92 and pay with a ₹100 note. How much change do you get, in rupees?
34. 34.A train leaves at 2:15 and reaches the next city at 3:50. How many minutes is the journey?
35. 35.Best estimate of 74 × 77? (a) 5600 (b) 56000 (c) 560
36. 36.7 + 8 =
37. 37.19 + 20 =
38. 38.8 + 4 =
39. 39.25 + 24 =
40. 40.259 ÷ 7 =

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