Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 618 · 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. 1.10% of ₹630 =
2. 2.7 + 9 =
3. 3.29² =
4. 4.5 + ? = 10
5. 5.340 ÷ 4 =
6. 6.23 + 24 =
7. 7.19² =
8. 8.28 laddoos are packed in boxes of 6. How many laddoos are left over?
9. 9.22 × 7 =
10. 10.Half of 130 =
11. 11.A cricket match starts at 3:25 and the first innings ends at 4:10. How many minutes did the innings last?
12. 12.10% of ₹100 =
13. 13.27 + 8 =
14. 14.Best estimate of 326 + 539? (a) 800 (b) 600 (c) 1000
15. 15.79 − 43 =
16. 16.7 + 6 =
17. 17.18 × 4 =
18. 18.21 + 22 =
19. 19.50% of ₹620 =
20. 20.36 + ? = 100
21. 21.87 × 3 =
22. 22.502 − 495 =
23. 23.A film starts at 2:55 and ends at 6:05. How many minutes long is the film?
24. 24.66 × 4 =
25. 25.36 + 6 =
26. 26.Double 99 =
27. 27.72 × 4 =
28. 28.36 + 5 =
29. 29.10% of ₹410 =
30. 30.You buy a kite for ₹96 and pay with a ₹100 note. How much change do you get, in rupees?
31. 31.You start your homework at 1:10 and finish at 1:40. How many minutes did you work?
32. 32.29 + 8 =
33. 33.8 + ? = 10
34. 34.55 + 6 =
35. 35.22 + 21 =
36. 36.28 × 9 =
37. 37.66 − 19 =
38. 38.What is the remainder when 91 is divided by 6?
39. 39.49 × 3 =
40. 40.Double 79 =

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