Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 244 · 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. 1.50 + 87 =
2. 2.16 × 8 =
3. 3.13² =
4. 4.Best estimate of 19 × 21? (a) 400 (b) 40 (c) 4000
5. 5.A train leaves at 1:20 and reaches the next city at 4:15. How many minutes is the journey?
6. 6.204 − 184 =
7. 7.17 × 8 =
8. 8.A film starts at 6:10 and ends at 8:55. How many minutes long is the film?
9. 9.27² =
10. 10.105 ÷ 7 =
11. 11.24² =
12. 12.66 + 5 =
13. 13.62 × 4 =
14. 14.16 × 4 =
15. 15.You buy a notebook for ₹19 and pay with a ₹100 note. How much change do you get, in rupees?
16. 16.You buy a box of crayons for ₹290 and pay with a ₹500 note. How much change do you get, in rupees?
17. 17.25% of ₹460 =
18. 18.10% of ₹290 =
19. 19.84 + ? = 100
20. 20.Best estimate of 518 + 554? (a) 900 (b) 1300 (c) 1100
21. 21.Double 79 =
22. 22.45 + 29 =
23. 23.Half of 82 =
24. 24.38 laddoos are packed in boxes of 7. How many laddoos are left over?
25. 25.6 + ? = 10
26. 26.65 × 4 =
27. 27.21 + 9 =
28. 28.81 + ? = 100
29. 29.93 × 8 =
30. 30.23² =
31. 31.20 × 4 =
32. 32.28 × 3 =
33. 33.506 − 476 =
34. 34.92 − 51 =
35. 35.176 ÷ 8 =
36. 36.24 + 71 =
37. 37.108 ÷ 4 =
38. 38.15 + 17 =
39. 39.Double 64 =
40. 40.104 ÷ 4 =

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