Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 741 · 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. 1.32 × 3 =
2. 2.21 + 23 =
3. 3.Best estimate of 723 + 251? (a) 1200 (b) 1000 (c) 800
4. 4.60 + ? = 100
5. 5.Double 73 =
6. 6.67 − 19 =
7. 7.You start your homework at 6:05 and finish at 7:00. How many minutes did you work?
8. 8.310 − 295 =
9. 9.1029 − 983 =
10. 10.27 laddoos are packed in boxes of 4. How many laddoos are left over?
11. 11.13 × 4 =
12. 12.57 − 26 =
13. 13.35 children stand in rows of 4. How many full rows can they make?
14. 14.312 + 99 =
15. 15.825 − 99 =
16. 16.A cricket match starts at 3:50 and the first innings ends at 6:25. How many minutes did the innings last?
17. 17.72 − 42 =
18. 18.A film starts at 4:40 and ends at 7:50. How many minutes long is the film?
19. 19.23 × 8 =
20. 20.75 + 36 =
21. 21.116 − 87 =
22. 22.Half of 158 =
23. 23.Half of 64 =
24. 24.A cricket match starts at 3:10 and the first innings ends at 5:20. How many minutes did the innings last?
25. 25.77 + 27 =
26. 26.288 ÷ 8 =
27. 27.35 + 62 =
28. 28.55 × 4 =
29. 29.A cricket match starts at 8:45 and the first innings ends at 9:30. How many minutes did the innings last?
30. 30.You start your homework at 5:45 and finish at 8:55. How many minutes did you work?
31. 31.Best estimate of 442 + 473? (a) 900 (b) 1100 (c) 700
32. 32.23² =
33. 33.33 × 9 =
34. 34.Double 41 =
35. 35.7 + 9 =
36. 36.5% of ₹670 =
37. 37.69 + 3 =
38. 38.You buy a water bottle for ₹15 and a pen for ₹21. You pay with a ₹100 note. How much change do you get, in rupees?
39. 39.A train leaves at 2:20 and reaches the next city at 3:40. How many minutes is the journey?
40. 40.74 − 18 =

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