Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 184 · 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. 1.26² =
2. 2.72 + ? = 100
3. 3.1030 − 982 =
4. 4.73 − 34 =
5. 5.6 + 8 =
6. 6.13 + 12 =
7. 7.Double 89 =
8. 8.10% of ₹70 =
9. 9.74 children stand in rows of 5. How many full rows can they make?
10. 10.144 ÷ 8 =
11. 11.60 × 4 =
12. 12.You buy a kite for ₹94 and pay with a ₹100 note. How much change do you get, in rupees?
13. 13.88 + 9 =
14. 14.5 + ? = 10
15. 15.58 × 4 =
16. 16.74 × 6 =
17. 17.86 + ? = 100
18. 18.A film starts at 7:30 and ends at 7:55. How many minutes long is the film?
19. 19.11² =
20. 20.Double 32 =
21. 21.57 + 8 =
22. 22.95 − 69 =
23. 23.You buy a pencil box for ₹265 and pay with a ₹500 note. How much change do you get, in rupees?
24. 24.842 − 99 =
25. 25.40 + ? = 100
26. 26.23 + ? = 100
27. 27.79 children stand in rows of 8. How many full rows can they make?
28. 28.188 ÷ 4 =
29. 29.21² =
30. 30.46 laddoos are packed in boxes of 8. How many laddoos are left over?
31. 31.55 + 29 =
32. 32.5% of ₹630 =
33. 33.13² =
34. 34.5% of ₹840 =
35. 35.48 × 9 =
36. 36.220 − 179 =
37. 37.Best estimate of 81 × 53? (a) 4000 (b) 400 (c) 40000
38. 38.364 ÷ 4 =
39. 39.282 + 99 =
40. 40.527 − 482 =

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