Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 869 · 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. 1.35 + 19 =
2. 2.10% of ₹330 =
3. 3.62 + 14 =
4. 4.89 + ? = 100
5. 5.34 laddoos are packed in boxes of 4. How many laddoos are left over?
6. 6.73 × 6 =
7. 7.35 × 8 =
8. 8.87 + 52 =
9. 9.19 × 4 =
10. 10.25 + 8 =
11. 11.5% of ₹670 =
12. 12.28 + 30 =
13. 13.77 × 7 =
14. 14.476 ÷ 7 =
15. 15.18² =
16. 16.You buy a storybook for ₹184 and pay with a ₹500 note. How much change do you get, in rupees?
17. 17.525 − 493 =
18. 18.Best estimate of 821 + 476? (a) 1100 (b) 1300 (c) 1500
19. 19.312 ÷ 8 =
20. 20.18 × 8 =
21. 21.Best estimate of 32 × 24? (a) 60 (b) 6000 (c) 600
22. 22.A train leaves at 6:35 and reaches the next city at 7:45. How many minutes is the journey?
23. 23.47 + 28 =
24. 24.You start your homework at 2:05 and finish at 3:00. How many minutes did you work?
25. 25.50 + 83 =
26. 26.13² =
27. 27.73 − 31 =
28. 28.216 ÷ 4 =
29. 29.67 × 3 =
30. 30.50% of ₹650 =
31. 31.Best estimate of 554 + 860? (a) 1700 (b) 1300 (c) 1500
32. 32.54 + 31 =
33. 33.1014 − 978 =
34. 34.21² =
35. 35.1015 − 996 =
36. 36.45 laddoos are packed in boxes of 6. How many laddoos are left over?
37. 37.265 ÷ 5 =
38. 38.39 + ? = 100
39. 39.222 ÷ 3 =
40. 40.124 − 78 =

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