Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 357 · 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. 1.5 + ? = 10
2. 2.You start your homework at 8:05 and finish at 10:35. How many minutes did you work?
3. 3.38 + 8 =
4. 4.Best estimate of 40 × 39? (a) 16000 (b) 1600 (c) 160
5. 5.Best estimate of 567 + 559? (a) 1200 (b) 1000 (c) 1400
6. 6.55 + 61 =
7. 7.55 − 41 =
8. 8.76 − 29 =
9. 9.76 − 37 =
10. 10.16 + 15 =
11. 11.9 + 10 =
12. 12.A cricket match starts at 8:10 and the first innings ends at 10:50. How many minutes did the innings last?
13. 13.48 + 6 =
14. 14.89 − 29 =
15. 15.5% of ₹800 =
16. 16.What is the remainder when 33 is divided by 4?
17. 17.14² =
18. 18.What is the remainder when 41 is divided by 9?
19. 19.15 + 6 =
20. 20.19² =
21. 21.78 ÷ 6 =
22. 22.189 ÷ 3 =
23. 23.A train leaves at 4:30 and reaches the next city at 6:15. How many minutes is the journey?
24. 24.You buy a cricket ball for ₹276 and pay with a ₹500 note. How much change do you get, in rupees?
25. 25.6 + ? = 10
26. 26.36 + 6 =
27. 27.9 + 2 =
28. 28.8 + 7 =
29. 29.10% of ₹750 =
30. 30.85 + 9 =
31. 31.87 + 9 =
32. 32.1 + ? = 10
33. 33.19 laddoos are packed in boxes of 4. How many laddoos are left over?
34. 34.74 − 21 =
35. 35.77 + 8 =
36. 36.279 ÷ 3 =
37. 37.525 − 488 =
38. 38.402 − 99 =
39. 39.You buy a water bottle for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
40. 40.75 − 37 =

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