Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 418 · 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. 1.66 − 37 =
2. 2.72 × 9 =
3. 3.32 + ? = 100
4. 4.You buy a cricket ball for ₹486 and pay with a ₹500 note. How much change do you get, in rupees?
5. 5.77 + 4 =
6. 6.108 laddoos are packed in boxes of 8. How many laddoos are left over?
7. 7.72 − 33 =
8. 8.46 laddoos are packed in boxes of 3. How many laddoos are left over?
9. 9.A cricket match starts at 3:15 and the first innings ends at 6:25. How many minutes did the innings last?
10. 10.1009 − 986 =
11. 11.5% of ₹100 =
12. 12.14 + 16 =
13. 13.16 + 18 =
14. 14.19² =
15. 15.97 × 9 =
16. 16.42 + ? = 100
17. 17.29 children stand in rows of 4. How many full rows can they make?
18. 18.59 children stand in rows of 9. How many full rows can they make?
19. 19.85 − 13 =
20. 20.75 + 24 =
21. 21.19 × 8 =
22. 22.54 − 19 =
23. 23.112 ÷ 8 =
24. 24.1018 − 992 =
25. 25.77 − 44 =
26. 26.31 × 8 =
27. 27.184 ÷ 8 =
28. 28.41 × 6 =
29. 29.28 − 19 =
30. 30.You buy a notebook for ₹28 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
31. 31.13 + 14 =
32. 32.502 − 495 =
33. 33.236 + 99 =
34. 34.97 − 72 =
35. 35.18 + 17 =
36. 36.18 + 8 =
37. 37.81 laddoos are packed in boxes of 6. How many laddoos are left over?
38. 38.Half of 50 =
39. 39.33 + 19 =
40. 40.84 + 42 =

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