Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 33 · 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. 1.15² =
2. 2.40 + ? = 100
3. 3.27 + 31 =
4. 4.80 + 29 =
5. 5.68 − 47 =
6. 6.You buy a pencil box for ₹17 and a pen for ₹16. You pay with a ₹100 note. How much change do you get, in rupees?
7. 7.68 laddoos are packed in boxes of 6. How many laddoos are left over?
8. 8.32 × 4 =
9. 9.1009 − 990 =
10. 10.You buy a storybook for ₹95 and pay with a ₹100 note. How much change do you get, in rupees?
11. 11.34 + 65 =
12. 12.384 ÷ 8 =
13. 13.21 + 23 =
14. 14.104 ÷ 8 =
15. 15.52 − 17 =
16. 16.50% of ₹730 =
17. 17.24 + 26 =
18. 18.88 + 6 =
19. 19.25% of ₹400 =
20. 20.Double 96 =
21. 21.Half of 198 =
22. 22.You buy a kite for ₹448 and pay with a ₹500 note. How much change do you get, in rupees?
23. 23.54 − 33 =
24. 24.6 + ? = 10
25. 25.14 + 13 =
26. 26.568 ÷ 8 =
27. 27.Double 85 =
28. 28.43 children stand in rows of 4. How many full rows can they make?
29. 29.56 + 9 =
30. 30.33 × 8 =
31. 31.19 + 21 =
32. 32.315 ÷ 7 =
33. 33.You buy a notebook for ₹105 and pay with a ₹500 note. How much change do you get, in rupees?
34. 34.10% of ₹660 =
35. 35.22 + 66 =
36. 36.36 × 4 =
37. 37.18² =
38. 38.28 + 76 =
39. 39.64 − 18 =
40. 40.You start your homework at 2:30 and finish at 3:00. How many minutes did you work?

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