Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 825 · 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. 1.58 + 19 =
2. 2.66 + 9 =
3. 3.65 × 9 =
4. 4.80 − 63 =
5. 5.11 + 10 =
6. 6.49 × 4 =
7. 7.26² =
8. 8.25% of ₹90 =
9. 9.288 ÷ 9 =
10. 10.168 ÷ 4 =
11. 11.92 − 33 =
12. 12.5 + 6 =
13. 13.50% of ₹750 =
14. 14.13 × 3 =
15. 15.Best estimate of 46 × 93? (a) 45000 (b) 4500 (c) 450
16. 16.You buy a box of crayons for ₹34 and pay with a ₹100 note. How much change do you get, in rupees?
17. 17.41 laddoos are packed in boxes of 4. How many laddoos are left over?
18. 18.57 × 4 =
19. 19.96 ÷ 8 =
20. 20.74 laddoos are packed in boxes of 5. How many laddoos are left over?
21. 21.434 ÷ 7 =
22. 22.A train leaves at 1:45 and reaches the next city at 2:50. How many minutes is the journey?
23. 23.306 ÷ 9 =
24. 24.Half of 162 =
25. 25.You buy a bag of mangoes for ₹270 and pay with a ₹500 note. How much change do you get, in rupees?
26. 26.232 ÷ 8 =
27. 27.29² =
28. 28.33 + 78 =
29. 29.You start your homework at 8:20 and finish at 9:55. How many minutes did you work?
30. 30.3 + ? = 10
31. 31.26 × 8 =
32. 32.216 ÷ 8 =
33. 33.228 ÷ 4 =
34. 34.A train leaves at 1:15 and reaches the next city at 3:15. How many minutes is the journey?
35. 35.Best estimate of 30 × 88? (a) 2700 (b) 27000 (c) 270
36. 36.50% of ₹110 =
37. 37.A film starts at 4:10 and ends at 5:50. How many minutes long is the film?
38. 38.99 − 70 =
39. 39.45 − 29 =
40. 40.152 ÷ 8 =

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