Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 963 · 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. 1.29 children stand in rows of 3. How many full rows can they make?
2. 2.Half of 102 =
3. 3.Best estimate of 470 + 607? (a) 900 (b) 1300 (c) 1100
4. 4.168 ÷ 8 =
5. 5.37 + 29 =
6. 6.You buy a notebook for ₹47 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.263 − 99 =
8. 8.50 − 29 =
9. 9.8 + ? = 10
10. 10.152 ÷ 4 =
11. 11.1 + ? = 10
12. 12.A film starts at 1:50 and ends at 3:40. How many minutes long is the film?
13. 13.28² =
14. 14.172 ÷ 4 =
15. 15.You buy a storybook for ₹18 and a pen for ₹29. You pay with a ₹100 note. How much change do you get, in rupees?
16. 16.Best estimate of 63 × 73? (a) 4200 (b) 42000 (c) 420
17. 17.5 + 8 =
18. 18.You buy a bag of mangoes for ₹65 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.57 + 81 =
20. 20.Double 82 =
21. 21.77 + 5 =
22. 22.50% of ₹140 =
23. 23.96 − 66 =
24. 24.50% of ₹780 =
25. 25.Best estimate of 635 + 390? (a) 800 (b) 1000 (c) 1200
26. 26.8 + 3 =
27. 27.Half of 96 =
28. 28.63 × 4 =
29. 29.72 × 6 =
30. 30.7 + ? = 10
31. 31.Half of 50 =
32. 32.You buy a pencil box for ₹178 and pay with a ₹500 note. How much change do you get, in rupees?
33. 33.Best estimate of 50 × 91? (a) 4500 (b) 450 (c) 45000
34. 34.77 + ? = 100
35. 35.A film starts at 2:20 and ends at 4:25. How many minutes long is the film?
36. 36.25 + 6 =
37. 37.130 − 78 =
38. 38.36 + 63 =
39. 39.What is the remainder when 86 is divided by 6?
40. 40.12 + 13 =

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