Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 647 · 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. 1.53 − 9 =
2. 2.6 + 5 =
3. 3.8 + 8 =
4. 4.You buy a water bottle for ₹126 and pay with a ₹500 note. How much change do you get, in rupees?
5. 5.63 ÷ 3 =
6. 6.27 × 8 =
7. 7.258 ÷ 3 =
8. 8.64 − 37 =
9. 9.64 + 29 =
10. 10.230 − 178 =
11. 11.64 ÷ 4 =
12. 12.Best estimate of 39 × 59? (a) 2400 (b) 240 (c) 24000
13. 13.61 − 47 =
14. 14.35 + 8 =
15. 15.18 + 20 =
16. 16.10% of ₹740 =
17. 17.304 ÷ 8 =
18. 18.Best estimate of 46 × 53? (a) 2500 (b) 250 (c) 25000
19. 19.99 − 31 =
20. 20.You buy a box of crayons for ₹19 and a pen for ₹42. You pay with a ₹100 note. How much change do you get, in rupees?
21. 21.5% of ₹720 =
22. 22.A train leaves at 5:05 and reaches the next city at 7:55. How many minutes is the journey?
23. 23.12 + 13 =
24. 24.370 − 99 =
25. 25.97 − 48 =
26. 26.78 − 19 =
27. 27.Double 22 =
28. 28.A train leaves at 3:20 and reaches the next city at 5:10. How many minutes is the journey?
29. 29.A film starts at 1:20 and ends at 2:40. How many minutes long is the film?
30. 30.What is the remainder when 55 is divided by 8?
31. 31.What is the remainder when 21 is divided by 5?
32. 32.264 ÷ 8 =
33. 33.Best estimate of 69 × 79? (a) 560 (b) 5600 (c) 56000
34. 34.A film starts at 4:50 and ends at 7:00. How many minutes long is the film?
35. 35.7 + 8 =
36. 36.53 − 40 =
37. 37.50 × 4 =
38. 38.A film starts at 5:15 and ends at 5:50. How many minutes long is the film?
39. 39.42 laddoos are packed in boxes of 9. How many laddoos are left over?
40. 40.65 + 29 =

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