Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 882 · 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. 1.248 + 99 =
2. 2.52 − 31 =
3. 3.7 + 6 =
4. 4.18 + 9 =
5. 5.42 × 5 =
6. 6.248 ÷ 4 =
7. 7.552 ÷ 6 =
8. 8.25 + 7 =
9. 9.13 × 8 =
10. 10.46 + 8 =
11. 11.25% of ₹860 =
12. 12.Double 51 =
13. 13.You buy a storybook for ₹337 and pay with a ₹500 note. How much change do you get, in rupees?
14. 14.23² =
15. 15.188 ÷ 4 =
16. 16.Best estimate of 187 + 863? (a) 900 (b) 1100 (c) 1300
17. 17.70 + 23 =
18. 18.11 + ? = 100
19. 19.168 ÷ 8 =
20. 20.30 + 29 =
21. 21.49 + 3 =
22. 22.86 + 6 =
23. 23.10% of ₹230 =
24. 24.28 children stand in rows of 3. How many full rows can they make?
25. 25.68 + 62 =
26. 26.92 − 36 =
27. 27.23 × 6 =
28. 28.19 + ? = 100
29. 29.70 − 27 =
30. 30.664 ÷ 8 =
31. 31.317 − 280 =
32. 32.240 ÷ 8 =
33. 33.5% of ₹360 =
34. 34.85 + 6 =
35. 35.336 ÷ 7 =
36. 36.576 ÷ 8 =
37. 37.You buy a bag of mangoes for ₹204 and pay with a ₹500 note. How much change do you get, in rupees?
38. 38.You buy a pencil box for ₹226 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.You buy a water bottle for ₹424 and pay with a ₹500 note. How much change do you get, in rupees?
40. 40.61 − 25 =

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