Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 106 · 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. 1.63 × 4 =
2. 2.50% of ₹770 =
3. 3.124 ÷ 4 =
4. 4.15 + 8 =
5. 5.396 ÷ 9 =
6. 6.73 × 4 =
7. 7.320 ÷ 5 =
8. 8.152 ÷ 8 =
9. 9.Best estimate of 29 × 12? (a) 30 (b) 300 (c) 3000
10. 10.502 − 492 =
11. 11.534 + 99 =
12. 12.49 children stand in rows of 4. How many full rows can they make?
13. 13.65 + 88 =
14. 14.100 ÷ 4 =
15. 15.52 ÷ 4 =
16. 16.A train leaves at 4:40 and reaches the next city at 6:00. How many minutes is the journey?
17. 17.Double 42 =
18. 18.4 + ? = 10
19. 19.208 ÷ 8 =
20. 20.23 + 25 =
21. 21.36 + 75 =
22. 22.8 + ? = 10
23. 23.You buy a pencil box for ₹44 and a pen for ₹29. You pay with a ₹100 note. How much change do you get, in rupees?
24. 24.288 ÷ 8 =
25. 25.128 − 87 =
26. 26.62 − 26 =
27. 27.517 − 495 =
28. 28.92 laddoos are packed in boxes of 9. How many laddoos are left over?
29. 29.68 − 45 =
30. 30.You buy a water bottle for ₹14 and pay with a ₹100 note. How much change do you get, in rupees?
31. 31.14 + 15 =
32. 32.28 + 27 =
33. 33.Double 76 =
34. 34.79 + 9 =
35. 35.56 × 6 =
36. 36.A film starts at 6:05 and ends at 6:45. How many minutes long is the film?
37. 37.55 − 31 =
38. 38.34 × 8 =
39. 39.53 laddoos are packed in boxes of 7. How many laddoos are left over?
40. 40.Best estimate of 808 + 282? (a) 1300 (b) 1100 (c) 900

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