Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 654 · 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. 1.93 − 49 =
2. 2.96 − 54 =
3. 3.4 + ? = 10
4. 4.5% of ₹60 =
5. 5.54 + 36 =
6. 6.You start your homework at 7:35 and finish at 8:45. How many minutes did you work?
7. 7.55 − 35 =
8. 8.Best estimate of 13 × 43? (a) 4000 (b) 400 (c) 40
9. 9.63 + ? = 100
10. 10.You buy a bag of mangoes for ₹167 and pay with a ₹500 note. How much change do you get, in rupees?
11. 11.180 ÷ 4 =
12. 12.56 + ? = 100
13. 13.24 + 29 =
14. 14.Half of 124 =
15. 15.719 + 99 =
16. 16.109 laddoos are packed in boxes of 7. How many laddoos are left over?
17. 17.28 + 8 =
18. 18.22 + 62 =
19. 19.Double 76 =
20. 20.520 − 475 =
21. 21.16 × 4 =
22. 22.26² =
23. 23.A film starts at 8:35 and ends at 9:40. How many minutes long is the film?
24. 24.1012 − 979 =
25. 25.66 + 7 =
26. 26.24² =
27. 27.58 + ? = 100
28. 28.10% of ₹730 =
29. 29.301 − 276 =
30. 30.You buy a kite for ₹351 and pay with a ₹500 note. How much change do you get, in rupees?
31. 31.248 ÷ 8 =
32. 32.You start your homework at 5:00 and finish at 7:40. How many minutes did you work?
33. 33.1010 − 979 =
34. 34.75 − 24 =
35. 35.29 + 30 =
36. 36.37 + 9 =
37. 37.66 − 54 =
38. 38.93 − 26 =
39. 39.25 × 3 =
40. 40.144 ÷ 8 =

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