Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 792 · 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 pencil box for ₹17 and a pen for ₹24. You pay with a ₹100 note. How much change do you get, in rupees?
2. 2.104 ÷ 8 =
3. 3.21² =
4. 4.16 + 18 =
5. 5.216 ÷ 8 =
6. 6.76 − 28 =
7. 7.Best estimate of 70 × 12? (a) 7000 (b) 700 (c) 70
8. 8.6 + 7 =
9. 9.28² =
10. 10.55 + ? = 100
11. 11.What is the remainder when 90 is divided by 7?
12. 12.28 + 27 =
13. 13.5 + 7 =
14. 14.306 − 286 =
15. 15.Best estimate of 38 × 88? (a) 3600 (b) 360 (c) 36000
16. 16.256 ÷ 8 =
17. 17.36 + 6 =
18. 18.You buy a kite for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.5% of ₹310 =
20. 20.70 + ? = 100
21. 21.A train leaves at 1:30 and reaches the next city at 2:35. How many minutes is the journey?
22. 22.10% of ₹460 =
23. 23.6 + 8 =
24. 24.56 − 41 =
25. 25.85 + 76 =
26. 26.10% of ₹630 =
27. 27.What is the remainder when 19 is divided by 3?
28. 28.17² =
29. 29.13 − 9 =
30. 30.62 + 9 =
31. 31.100 laddoos are packed in boxes of 7. How many laddoos are left over?
32. 32.564 ÷ 6 =
33. 33.69 − 31 =
34. 34.17 × 4 =
35. 35.1015 − 980 =
36. 36.585 ÷ 9 =
37. 37.50% of ₹120 =
38. 38.39 + ? = 100
39. 39.You buy a notebook for ₹82 and pay with a ₹100 note. How much change do you get, in rupees?
40. 40.13 + 15 =

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