Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 22 · 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.A train leaves at 1:50 and reaches the next city at 4:40. How many minutes is the journey?
2. 2.55 + 47 =
3. 3.52 ÷ 4 =
4. 4.57 − 19 =
5. 5.107 − 70 =
6. 6.510 − 483 =
7. 7.413 ÷ 7 =
8. 8.Half of 136 =
9. 9.What is the remainder when 57 is divided by 4?
10. 10.You start your homework at 3:55 and finish at 5:55. How many minutes did you work?
11. 11.232 ÷ 4 =
12. 12.78 − 37 =
13. 13.10% of ₹800 =
14. 14.Best estimate of 59 × 36? (a) 240 (b) 2400 (c) 24000
15. 15.61 + 41 =
16. 16.20 + 21 =
17. 17.Half of 132 =
18. 18.28² =
19. 19.20 laddoos are packed in boxes of 3. How many laddoos are left over?
20. 20.Best estimate of 56 × 19? (a) 120 (b) 12000 (c) 1200
21. 21.27 + 7 =
22. 22.13 × 5 =
23. 23.91 × 9 =
24. 24.202 − 190 =
25. 25.74 + 44 =
26. 26.39 × 8 =
27. 27.724 − 99 =
28. 28.837 ÷ 9 =
29. 29.430 ÷ 5 =
30. 30.50% of ₹40 =
31. 31.You buy a pencil box for ₹18 and a pen for ₹30. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.144 ÷ 8 =
33. 33.Double 86 =
34. 34.136 + 99 =
35. 35.A train leaves at 4:40 and reaches the next city at 6:00. How many minutes is the journey?
36. 36.22 + 9 =
37. 37.83 − 61 =
38. 38.57 + 48 =
39. 39.What is the remainder when 32 is divided by 3?
40. 40.14 children stand in rows of 3. How many full rows can they make?

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