Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 760 · 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.You buy a cricket ball for ₹123 and pay with a ₹500 note. How much change do you get, in rupees?
2. 2.43 + 21 =
3. 3.35 × 8 =
4. 4.40 laddoos are packed in boxes of 9. How many laddoos are left over?
5. 5.99 − 64 =
6. 6.91 ÷ 7 =
7. 7.A film starts at 3:50 and ends at 6:10. How many minutes long is the film?
8. 8.69 + 29 =
9. 9.65 × 8 =
10. 10.16 + ? = 100
11. 11.Double 36 =
12. 12.102 − 57 =
13. 13.78 − 9 =
14. 14.24 + 23 =
15. 15.35 + 9 =
16. 16.28 × 6 =
17. 17.70 − 29 =
18. 18.18 × 8 =
19. 19.50% of ₹50 =
20. 20.22 × 3 =
21. 21.Double 52 =
22. 22.88 laddoos are packed in boxes of 9. How many laddoos are left over?
23. 23.You buy a notebook for ₹246 and pay with a ₹500 note. How much change do you get, in rupees?
24. 24.23 − 19 =
25. 25.Best estimate of 68 × 70? (a) 49000 (b) 4900 (c) 490
26. 26.22 children stand in rows of 3. How many full rows can they make?
27. 27.9 + 11 =
28. 28.43 + ? = 100
29. 29.1 + ? = 10
30. 30.240 ÷ 4 =
31. 31.98 − 76 =
32. 32.Half of 144 =
33. 33.86 + ? = 100
34. 34.68 × 4 =
35. 35.67 + 29 =
36. 36.50 − 19 =
37. 37.112 ÷ 4 =
38. 38.480 + 99 =
39. 39.202 − 185 =
40. 40.22 − 9 =

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