Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 702 · 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 + 48 =
2. 2.22 + 75 =
3. 3.94 − 84 =
4. 4.14 + 16 =
5. 5.What is the remainder when 80 is divided by 6?
6. 6.You buy a notebook for ₹80 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.75 + 7 =
8. 8.A film starts at 1:10 and ends at 2:30. How many minutes long is the film?
9. 9.67 × 3 =
10. 10.18 + 17 =
11. 11.450 + 99 =
12. 12.69 − 31 =
13. 13.A film starts at 8:40 and ends at 11:55. How many minutes long is the film?
14. 14.10% of ₹560 =
15. 15.80 − 16 =
16. 16.576 ÷ 6 =
17. 17.131 children stand in rows of 9. How many full rows can they make?
18. 18.584 ÷ 8 =
19. 19.A film starts at 6:55 and ends at 8:25. How many minutes long is the film?
20. 20.17² =
21. 21.67 + 7 =
22. 22.Best estimate of 121 + 174? (a) 100 (b) 500 (c) 300
23. 23.Best estimate of 43 × 52? (a) 2000 (b) 200 (c) 20000
24. 24.70 + ? = 100
25. 25.65 + ? = 100
26. 26.49 + 8 =
27. 27.21 children stand in rows of 5. How many full rows can they make?
28. 28.56 + 8 =
29. 29.What is the remainder when 79 is divided by 7?
30. 30.21 + 29 =
31. 31.128 ÷ 8 =
32. 32.65 − 38 =
33. 33.98 − 24 =
34. 34.18 laddoos are packed in boxes of 4. How many laddoos are left over?
35. 35.288 ÷ 8 =
36. 36.Best estimate of 623 + 313? (a) 700 (b) 900 (c) 1100
37. 37.Best estimate of 62 × 23? (a) 12000 (b) 120 (c) 1200
38. 38.85 − 48 =
39. 39.64 × 4 =
40. 40.800 + 99 =

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