Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 724 · 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. 1.325 − 284 =
2. 2.272 ÷ 8 =
3. 3.37 + 5 =
4. 4.78 − 41 =
5. 5.24² =
6. 6.72 + 29 =
7. 7.28 × 8 =
8. 8.25% of ₹830 =
9. 9.48 × 8 =
10. 10.51 × 4 =
11. 11.What is the remainder when 43 is divided by 3?
12. 12.21² =
13. 13.What is the remainder when 22 is divided by 5?
14. 14.60 − 12 =
15. 15.510 ÷ 6 =
16. 16.75 + 7 =
17. 17.772 + 99 =
18. 18.86 + 27 =
19. 19.86 − 51 =
20. 20.A train leaves at 4:25 and reaches the next city at 6:50. How many minutes is the journey?
21. 21.1026 − 990 =
22. 22.27 + 7 =
23. 23.69 + 29 =
24. 24.309 − 298 =
25. 25.You buy a water bottle for ₹14 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
26. 26.76 ÷ 4 =
27. 27.62 + ? = 100
28. 28.15 + 29 =
29. 29.Best estimate of 755 + 144? (a) 1100 (b) 900 (c) 700
30. 30.A cricket match starts at 3:50 and the first innings ends at 4:30. How many minutes did the innings last?
31. 31.You buy a kite for ₹22 and a pen for ₹12. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.Best estimate of 858 + 326? (a) 1200 (b) 1400 (c) 1000
33. 33.10% of ₹890 =
34. 34.8 + 5 =
35. 35.Best estimate of 197 + 757? (a) 1000 (b) 1200 (c) 800
36. 36.A train leaves at 2:00 and reaches the next city at 2:40. How many minutes is the journey?
37. 37.Best estimate of 226 + 738? (a) 700 (b) 1100 (c) 900
38. 38.Best estimate of 426 + 842? (a) 1400 (b) 1000 (c) 1200
39. 39.304 − 285 =
40. 40.You start your homework at 5:00 and finish at 7:55. How many minutes did you work?

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