Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 585 · 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. 1.16 × 8 =
2. 2.68 + 15 =
3. 3.26² =
4. 4.1 + ? = 10
5. 5.12 + 14 =
6. 6.22 + 23 =
7. 7.188 ÷ 4 =
8. 8.272 ÷ 8 =
9. 9.You buy a storybook for ₹16 and a pen for ₹19. You pay with a ₹100 note. How much change do you get, in rupees?
10. 10.303 − 276 =
11. 11.73 − 44 =
12. 12.5% of ₹400 =
13. 13.23 × 4 =
14. 14.69 ÷ 3 =
15. 15.You buy a pencil box for ₹417 and pay with a ₹500 note. How much change do you get, in rupees?
16. 16.79 + 3 =
17. 17.21² =
18. 18.Best estimate of 847 + 712? (a) 1300 (b) 1500 (c) 1700
19. 19.13 laddoos are packed in boxes of 3. How many laddoos are left over?
20. 20.18² =
21. 21.16 + 9 =
22. 22.23 laddoos are packed in boxes of 3. How many laddoos are left over?
23. 23.Half of 108 =
24. 24.156 ÷ 4 =
25. 25.75 − 29 =
26. 26.27 + 26 =
27. 27.50% of ₹280 =
28. 28.25 + 62 =
29. 29.25% of ₹700 =
30. 30.96 − 68 =
31. 31.90 ÷ 6 =
32. 32.516 ÷ 6 =
33. 33.126 ÷ 6 =
34. 34.Best estimate of 92 × 90? (a) 8100 (b) 810 (c) 81000
35. 35.168 ÷ 8 =
36. 36.You start your homework at 3:50 and finish at 5:25. How many minutes did you work?
37. 37.You buy a cricket ball for ₹59 and pay with a ₹100 note. How much change do you get, in rupees?
38. 38.55 + 9 =
39. 39.84 × 6 =
40. 40.77 + 7 =

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