Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 726 · 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. 1.61 − 44 =
2. 2.What is the remainder when 25 is divided by 4?
3. 3.23 − 19 =
4. 4.68 − 36 =
5. 5.65 + 9 =
6. 6.16 + 8 =
7. 7.You buy a bag of mangoes for ₹65 and pay with a ₹100 note. How much change do you get, in rupees?
8. 8.31 × 8 =
9. 9.What is the remainder when 21 is divided by 4?
10. 10.50% of ₹450 =
11. 11.Best estimate of 516 + 765? (a) 1300 (b) 1500 (c) 1100
12. 12.28² =
13. 13.28 + 9 =
14. 14.82 + 22 =
15. 15.73 × 7 =
16. 16.78 − 29 =
17. 17.55 − 19 =
18. 18.A film starts at 3:25 and ends at 6:25. How many minutes long is the film?
19. 19.69 − 9 =
20. 20.20 + 19 =
21. 21.A train leaves at 1:05 and reaches the next city at 2:25. How many minutes is the journey?
22. 22.74 + 59 =
23. 23.You start your homework at 4:55 and finish at 5:30. How many minutes did you work?
24. 24.128 ÷ 8 =
25. 25.10 + 12 =
26. 26.754 + 99 =
27. 27.1 + ? = 10
28. 28.63 + 19 =
29. 29.20 − 9 =
30. 30.26² =
31. 31.1006 − 994 =
32. 32.36 + 9 =
33. 33.26 × 8 =
34. 34.26 − 9 =
35. 35.A film starts at 6:10 and ends at 7:20. How many minutes long is the film?
36. 36.50% of ₹660 =
37. 37.Double 22 =
38. 38.50% of ₹140 =
39. 39.30 + 31 =
40. 40.324 ÷ 4 =

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