Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 960 · 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. 1.7 + 8 =
2. 2.230 − 176 =
3. 3.36 + ? = 100
4. 4.304 ÷ 8 =
5. 5.214 − 180 =
6. 6.224 ÷ 8 =
7. 7.111 laddoos are packed in boxes of 8. How many laddoos are left over?
8. 8.17 + 5 =
9. 9.26 + 28 =
10. 10.You start your homework at 3:45 and finish at 5:55. How many minutes did you work?
11. 11.25 × 8 =
12. 12.23 + ? = 100
13. 13.29 × 8 =
14. 14.29² =
15. 15.You buy a storybook for ₹329 and pay with a ₹500 note. How much change do you get, in rupees?
16. 16.70 − 34 =
17. 17.84 − 19 =
18. 18.A film starts at 8:10 and ends at 10:55. How many minutes long is the film?
19. 19.21² =
20. 20.You buy a cricket ball for ₹340 and pay with a ₹500 note. How much change do you get, in rupees?
21. 21.You start your homework at 2:00 and finish at 4:25. How many minutes did you work?
22. 22.73 children stand in rows of 7. How many full rows can they make?
23. 23.77 − 65 =
24. 24.77 + 5 =
25. 25.57 − 16 =
26. 26.124 − 91 =
27. 27.11 + ? = 100
28. 28.53 × 4 =
29. 29.35 + ? = 100
30. 30.5% of ₹600 =
31. 31.44 × 3 =
32. 32.85 × 9 =
33. 33.50% of ₹520 =
34. 34.23 + 24 =
35. 35.57 + 9 =
36. 36.27 + 7 =
37. 37.5 + 6 =
38. 38.Best estimate of 274 + 155? (a) 500 (b) 700 (c) 300
39. 39.46 + 8 =
40. 40.20 × 4 =

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