Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 273 · 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. 1.5% of ₹330 =
2. 2.119 − 93 =
3. 3.87 × 9 =
4. 4.21 + 20 =
5. 5.You buy a pencil box for ₹307 and pay with a ₹500 note. How much change do you get, in rupees?
6. 6.Double 38 =
7. 7.56 − 12 =
8. 8.Best estimate of 144 + 201? (a) 500 (b) 300 (c) 100
9. 9.204 ÷ 4 =
10. 10.You buy a notebook for ₹141 and pay with a ₹500 note. How much change do you get, in rupees?
11. 11.222 ÷ 3 =
12. 12.30 + 29 =
13. 13.14 + ? = 100
14. 14.136 ÷ 8 =
15. 15.37 − 9 =
16. 16.66 + 7 =
17. 17.26 + 76 =
18. 18.A film starts at 5:05 and ends at 7:20. How many minutes long is the film?
19. 19.306 − 275 =
20. 20.396 ÷ 6 =
21. 21.14² =
22. 22.375 ÷ 5 =
23. 23.40 + 37 =
24. 24.50% of ₹750 =
25. 25.770 − 99 =
26. 26.You buy a kite for ₹45 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
27. 27.12 + 9 =
28. 28.27 + 36 =
29. 29.Double 26 =
30. 30.You start your homework at 3:35 and finish at 6:55. How many minutes did you work?
31. 31.40 + 27 =
32. 32.36 × 4 =
33. 33.47 × 4 =
34. 34.26² =
35. 35.16 − 9 =
36. 36.67 + 31 =
37. 37.576 ÷ 8 =
38. 38.85 + 21 =
39. 39.11 + 12 =
40. 40.55 × 4 =

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