Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 19 · 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. 1.5 + ? = 10
2. 2.86 − 31 =
3. 3.Best estimate of 28 × 71? (a) 21000 (b) 210 (c) 2100
4. 4.99 − 60 =
5. 5.19 × 4 =
6. 6.Half of 28 =
7. 7.14 − 9 =
8. 8.5% of ₹130 =
9. 9.76 + 5 =
10. 10.47 − 19 =
11. 11.50% of ₹550 =
12. 12.85 + ? = 100
13. 13.80 − 67 =
14. 14.83 × 6 =
15. 15.12 + ? = 100
16. 16.A train leaves at 1:45 and reaches the next city at 3:35. How many minutes is the journey?
17. 17.10 + 9 =
18. 18.776 ÷ 8 =
19. 19.Best estimate of 565 + 689? (a) 1500 (b) 1300 (c) 1100
20. 20.You buy a water bottle for ₹34 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
21. 21.31 + 89 =
22. 22.What is the remainder when 53 is divided by 4?
23. 23.23 + 24 =
24. 24.16² =
25. 25.29 + 2 =
26. 26.A film starts at 6:45 and ends at 9:25. How many minutes long is the film?
27. 27.184 ÷ 4 =
28. 28.A train leaves at 1:45 and reaches the next city at 4:00. How many minutes is the journey?
29. 29.120 ÷ 8 =
30. 30.What is the remainder when 103 is divided by 8?
31. 31.30 × 8 =
32. 32.You buy a box of crayons for ₹39 and pay with a ₹100 note. How much change do you get, in rupees?
33. 33.89 − 27 =
34. 34.43 laddoos are packed in boxes of 6. How many laddoos are left over?
35. 35.19 × 3 =
36. 36.7 + ? = 10
37. 37.8 + 9 =
38. 38.A cricket match starts at 7:30 and the first innings ends at 10:25. How many minutes did the innings last?
39. 39.81 + 61 =
40. 40.27² =

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