Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 119 · 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. 1.10% of ₹460 =
2. 2.47 × 9 =
3. 3.You buy a storybook for ₹83 and pay with a ₹100 note. How much change do you get, in rupees?
4. 4.37 × 8 =
5. 5.729 ÷ 9 =
6. 6.69 − 55 =
7. 7.10% of ₹720 =
8. 8.17 children stand in rows of 3. How many full rows can they make?
9. 9.78 × 5 =
10. 10.47 + 32 =
11. 11.53 × 4 =
12. 12.316 ÷ 4 =
13. 13.85 × 9 =
14. 14.8 + 9 =
15. 15.58 children stand in rows of 9. How many full rows can they make?
16. 16.You buy a kite for ₹33 and a pen for ₹27. You pay with a ₹100 note. How much change do you get, in rupees?
17. 17.36 + 38 =
18. 18.85 + 7 =
19. 19.Best estimate of 659 + 543? (a) 1000 (b) 1200 (c) 1400
20. 20.31 × 5 =
21. 21.Half of 74 =
22. 22.Best estimate of 19 × 73? (a) 140 (b) 14000 (c) 1400
23. 23.19 + 9 =
24. 24.232 ÷ 4 =
25. 25.320 ÷ 8 =
26. 26.88 ÷ 8 =
27. 27.58 + 51 =
28. 28.You buy a water bottle for ₹68 and pay with a ₹100 note. How much change do you get, in rupees?
29. 29.A train leaves at 6:25 and reaches the next city at 7:05. How many minutes is the journey?
30. 30.31 × 3 =
31. 31.You start your homework at 2:45 and finish at 4:55. How many minutes did you work?
32. 32.88 − 19 =
33. 33.34 + ? = 100
34. 34.Best estimate of 352 + 656? (a) 1300 (b) 1100 (c) 900
35. 35.You buy a kite for ₹181 and pay with a ₹500 note. How much change do you get, in rupees?
36. 36.15 × 8 =
37. 37.79 − 19 =
38. 38.52 + 83 =
39. 39.A film starts at 4:40 and ends at 5:10. How many minutes long is the film?
40. 40.Best estimate of 24 × 90? (a) 18000 (b) 1800 (c) 180

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