Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 505 · 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. 1.3 + ? = 10
2. 2.34 × 4 =
3. 3.71 + ? = 100
4. 4.84 + 71 =
5. 5.68 − 51 =
6. 6.80 − 32 =
7. 7.143 laddoos are packed in boxes of 9. How many laddoos are left over?
8. 8.19 + 18 =
9. 9.51 × 4 =
10. 10.25 × 4 =
11. 11.A cricket match starts at 2:10 and the first innings ends at 4:15. How many minutes did the innings last?
12. 12.13 × 8 =
13. 13.82 × 8 =
14. 14.37 + ? = 100
15. 15.Best estimate of 31 × 33? (a) 9000 (b) 900 (c) 90
16. 16.A train leaves at 2:15 and reaches the next city at 4:40. How many minutes is the journey?
17. 17.94 − 73 =
18. 18.188 ÷ 4 =
19. 19.59 − 48 =
20. 20.25% of ₹40 =
21. 21.10% of ₹770 =
22. 22.107 − 57 =
23. 23.20 × 8 =
24. 24.52 × 4 =
25. 25.26 + 9 =
26. 26.276 ÷ 3 =
27. 27.You start your homework at 2:35 and finish at 4:55. How many minutes did you work?
28. 28.385 ÷ 7 =
29. 29.50% of ₹660 =
30. 30.38 + 4 =
31. 31.28 + 5 =
32. 32.30 + 19 =
33. 33.You buy a kite for ₹413 and pay with a ₹500 note. How much change do you get, in rupees?
34. 34.45 + 7 =
35. 35.356 + 99 =
36. 36.162 ÷ 3 =
37. 37.75 laddoos are packed in boxes of 7. How many laddoos are left over?
38. 38.59 + 9 =
39. 39.224 ÷ 4 =
40. 40.57 + 7 =

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