Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 746 · 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. 1.224 ÷ 4 =
2. 2.You buy a pencil box for ₹311 and pay with a ₹500 note. How much change do you get, in rupees?
3. 3.16 + 18 =
4. 4.Double 22 =
5. 5.10 + 9 =
6. 6.Best estimate of 13 × 86? (a) 90 (b) 9000 (c) 900
7. 7.5% of ₹860 =
8. 8.1025 − 989 =
9. 9.28 + 72 =
10. 10.19 laddoos are packed in boxes of 3. How many laddoos are left over?
11. 11.8 + ? = 10
12. 12.61 + ? = 100
13. 13.517 − 485 =
14. 14.17² =
15. 15.53 × 4 =
16. 16.15² =
17. 17.You buy a water bottle for ₹11 and a pen for ₹14. You pay with a ₹100 note. How much change do you get, in rupees?
18. 18.39 + 2 =
19. 19.25% of ₹800 =
20. 20.39 + 9 =
21. 21.23² =
22. 22.24 × 4 =
23. 23.30 + 53 =
24. 24.198 ÷ 9 =
25. 25.122 − 93 =
26. 26.30 + 29 =
27. 27.89 + 9 =
28. 28.29² =
29. 29.57 − 36 =
30. 30.10% of ₹810 =
31. 31.75 − 39 =
32. 32.309 − 295 =
33. 33.216 ÷ 4 =
34. 34.You buy a cricket ball for ₹399 and pay with a ₹500 note. How much change do you get, in rupees?
35. 35.Best estimate of 36 × 23? (a) 80 (b) 8000 (c) 800
36. 36.98 − 29 =
37. 37.You buy a water bottle for ₹12 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.15 × 8 =
39. 39.You buy a box of crayons for ₹246 and pay with a ₹500 note. How much change do you get, in rupees?
40. 40.37 children stand in rows of 4. How many full rows can they make?

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