Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 366 · 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. 1.23² =
2. 2.68 − 18 =
3. 3.You buy a bag of mangoes for ₹48 and pay with a ₹100 note. How much change do you get, in rupees?
4. 4.65 − 33 =
5. 5.A film starts at 1:05 and ends at 4:25. How many minutes long is the film?
6. 6.85 + 9 =
7. 7.624 ÷ 8 =
8. 8.A cricket match starts at 2:25 and the first innings ends at 5:05. How many minutes did the innings last?
9. 9.25% of ₹170 =
10. 10.104 − 85 =
11. 11.13² =
12. 12.552 + 99 =
13. 13.Double 35 =
14. 14.71 − 48 =
15. 15.14 × 8 =
16. 16.85 + 41 =
17. 17.15² =
18. 18.22 + 29 =
19. 19.Half of 130 =
20. 20.220 ÷ 5 =
21. 21.71 − 51 =
22. 22.50% of ₹170 =
23. 23.66 × 5 =
24. 24.Best estimate of 419 + 138? (a) 500 (b) 700 (c) 300
25. 25.29 + 31 =
26. 26.220 − 176 =
27. 27.61 + 71 =
28. 28.11 + ? = 100
29. 29.61 × 4 =
30. 30.13 children stand in rows of 3. How many full rows can they make?
31. 31.71 × 9 =
32. 32.121 laddoos are packed in boxes of 9. How many laddoos are left over?
33. 33.Half of 150 =
34. 34.518 − 493 =
35. 35.92 children stand in rows of 7. How many full rows can they make?
36. 36.72 + 9 =
37. 37.You buy a storybook for ₹25 and a pen for ₹41. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.25 + 29 =
39. 39.368 ÷ 8 =
40. 40.You buy a water bottle for ₹14 and a pen for ₹38. You pay with a ₹100 note. How much change do you get, in rupees?

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