Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 356 · 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. 1.36 + ? = 100
2. 2.You buy a water bottle for ₹63 and pay with a ₹100 note. How much change do you get, in rupees?
3. 3.70 − 54 =
4. 4.19 × 4 =
5. 5.13 + 19 =
6. 6.30 + 39 =
7. 7.6 + 8 =
8. 8.You buy a box of crayons for ₹33 and pay with a ₹100 note. How much change do you get, in rupees?
9. 9.7 + ? = 10
10. 10.97 − 29 =
11. 11.12² =
12. 12.50% of ₹380 =
13. 13.17 + 6 =
14. 14.You buy a pencil box for ₹33 and pay with a ₹100 note. How much change do you get, in rupees?
15. 15.43 + 29 =
16. 16.19 × 9 =
17. 17.Half of 156 =
18. 18.A cricket match starts at 1:30 and the first innings ends at 4:50. How many minutes did the innings last?
19. 19.80 − 19 =
20. 20.57 + 72 =
21. 21.75 × 4 =
22. 22.21 + 20 =
23. 23.5% of ₹120 =
24. 24.Best estimate of 713 + 609? (a) 1100 (b) 1300 (c) 1500
25. 25.78 + 71 =
26. 26.590 − 99 =
27. 27.4 + ? = 10
28. 28.A film starts at 2:10 and ends at 5:00. How many minutes long is the film?
29. 29.35 + 6 =
30. 30.17 children stand in rows of 3. How many full rows can they make?
31. 31.10% of ₹210 =
32. 32.240 ÷ 4 =
33. 33.495 ÷ 9 =
34. 34.531 ÷ 9 =
35. 35.395 ÷ 5 =
36. 36.Best estimate of 30 × 26? (a) 900 (b) 9000 (c) 90
37. 37.21² =
38. 38.342 ÷ 6 =
39. 39.What is the remainder when 92 is divided by 6?
40. 40.26 + 19 =

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