Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 530 · 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. 1.17 + 29 =
2. 2.19² =
3. 3.Best estimate of 451 + 572? (a) 1100 (b) 1300 (c) 900
4. 4.Double 61 =
5. 5.You buy a box of crayons for ₹21 and a pen for ₹21. You pay with a ₹100 note. How much change do you get, in rupees?
6. 6.You buy a pencil box for ₹207 and pay with a ₹500 note. How much change do you get, in rupees?
7. 7.152 ÷ 8 =
8. 8.21 × 3 =
9. 9.77 + 4 =
10. 10.68 − 13 =
11. 11.94 − 47 =
12. 12.39 ÷ 3 =
13. 13.27 + 4 =
14. 14.You buy a cricket ball for ₹41 and a pen for ₹15. You pay with a ₹100 note. How much change do you get, in rupees?
15. 15.108 ÷ 3 =
16. 16.28² =
17. 17.86 + 35 =
18. 18.65 + 69 =
19. 19.25% of ₹700 =
20. 20.19 × 8 =
21. 21.A film starts at 1:50 and ends at 2:20. How many minutes long is the film?
22. 22.521 − 490 =
23. 23.76 + 29 =
24. 24.22 × 5 =
25. 25.61 − 47 =
26. 26.Best estimate of 14 × 31? (a) 30 (b) 300 (c) 3000
27. 27.10% of ₹430 =
28. 28.You buy a water bottle for ₹314 and pay with a ₹500 note. How much change do you get, in rupees?
29. 29.31 children stand in rows of 3. How many full rows can they make?
30. 30.20 + 9 =
31. 31.10% of ₹670 =
32. 32.73 − 19 =
33. 33.294 ÷ 7 =
34. 34.385 ÷ 5 =
35. 35.21 children stand in rows of 4. How many full rows can they make?
36. 36.39 + 4 =
37. 37.Double 33 =
38. 38.288 ÷ 8 =
39. 39.272 ÷ 8 =
40. 40.25 + 27 =

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