Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 75 · 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.A film starts at 8:15 and ends at 10:50. How many minutes long is the film?
2. 2.58 + 6 =
3. 3.21 children stand in rows of 5. How many full rows can they make?
4. 4.58 − 16 =
5. 5.Double 26 =
6. 6.46 + 9 =
7. 7.A train leaves at 3:00 and reaches the next city at 4:05. How many minutes is the journey?
8. 8.Double 35 =
9. 9.96 − 19 =
10. 10.73 × 6 =
11. 11.Double 36 =
12. 12.6 + 7 =
13. 13.16² =
14. 14.Best estimate of 31 × 12? (a) 300 (b) 30 (c) 3000
15. 15.61 + ? = 100
16. 16.13² =
17. 17.124 ÷ 4 =
18. 18.You buy a water bottle for ₹51 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.20 + 19 =
20. 20.288 ÷ 8 =
21. 21.You buy a cricket ball for ₹12 and a pen for ₹19. You pay with a ₹100 note. How much change do you get, in rupees?
22. 22.13 + ? = 100
23. 23.84 + 62 =
24. 24.306 − 282 =
25. 25.61 − 25 =
26. 26.90 − 28 =
27. 27.29 × 6 =
28. 28.524 − 477 =
29. 29.36 + 5 =
30. 30.53 + ? = 100
31. 31.65 − 44 =
32. 32.92 − 64 =
33. 33.62 + 81 =
34. 34.5% of ₹180 =
35. 35.12² =
36. 36.21² =
37. 37.5% of ₹560 =
38. 38.You buy a cricket ball for ₹351 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.What is the remainder when 26 is divided by 4?
40. 40.51 laddoos are packed in boxes of 7. How many laddoos are left over?

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