Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 666 · 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 start your homework at 3:15 and finish at 3:50. How many minutes did you work?
2. 2.102 − 77 =
3. 3.Double 51 =
4. 4.74 − 17 =
5. 5.727 + 99 =
6. 6.508 − 491 =
7. 7.10% of ₹400 =
8. 8.61 children stand in rows of 5. How many full rows can they make?
9. 9.5% of ₹200 =
10. 10.15² =
11. 11.You buy a water bottle for ₹197 and pay with a ₹500 note. How much change do you get, in rupees?
12. 12.72 − 46 =
13. 13.25% of ₹520 =
14. 14.256 ÷ 8 =
15. 15.13 + 12 =
16. 16.130 − 81 =
17. 17.508 + 99 =
18. 18.15 − 9 =
19. 19.168 ÷ 8 =
20. 20.You buy a pencil box for ₹16 and a pen for ₹37. You pay with a ₹100 note. How much change do you get, in rupees?
21. 21.1027 − 996 =
22. 22.20 × 8 =
23. 23.51 ÷ 3 =
24. 24.69 − 55 =
25. 25.79 laddoos are packed in boxes of 5. How many laddoos are left over?
26. 26.82 − 19 =
27. 27.A train leaves at 2:00 and reaches the next city at 4:35. How many minutes is the journey?
28. 28.23² =
29. 29.96 − 72 =
30. 30.You start your homework at 2:10 and finish at 3:25. How many minutes did you work?
31. 31.Half of 104 =
32. 32.48 + 7 =
33. 33.64 × 4 =
34. 34.58 laddoos are packed in boxes of 4. How many laddoos are left over?
35. 35.A train leaves at 3:55 and reaches the next city at 7:15. How many minutes is the journey?
36. 36.68 + ? = 100
37. 37.62 × 4 =
38. 38.11² =
39. 39.95 − 76 =
40. 40.50% of ₹170 =

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