Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 920 · 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. 1.59 − 21 =
2. 2.25% of ₹90 =
3. 3.160 ÷ 4 =
4. 4.83 × 3 =
5. 5.13² =
6. 6.6 + 5 =
7. 7.A train leaves at 6:05 and reaches the next city at 6:55. How many minutes is the journey?
8. 8.35 + ? = 100
9. 9.80 − 9 =
10. 10.405 ÷ 9 =
11. 11.27 + 17 =
12. 12.84 − 19 =
13. 13.24 + 26 =
14. 14.Double 31 =
15. 15.28 + 3 =
16. 16.64 − 46 =
17. 17.10% of ₹740 =
18. 18.209 − 187 =
19. 19.10% of ₹40 =
20. 20.What is the remainder when 61 is divided by 9?
21. 21.15² =
22. 22.13 + ? = 100
23. 23.72 − 27 =
24. 24.59 × 8 =
25. 25.Double 68 =
26. 26.101 − 62 =
27. 27.A cricket match starts at 2:40 and the first innings ends at 5:10. How many minutes did the innings last?
28. 28.22 × 8 =
29. 29.96 − 71 =
30. 30.You start your homework at 3:15 and finish at 5:50. How many minutes did you work?
31. 31.93 ÷ 3 =
32. 32.You buy a kite for ₹38 and pay with a ₹100 note. How much change do you get, in rupees?
33. 33.9 + 8 =
34. 34.What is the remainder when 45 is divided by 6?
35. 35.54 × 4 =
36. 36.61 × 4 =
37. 37.65 + 35 =
38. 38.69 + 17 =
39. 39.You buy a storybook for ₹15 and a pen for ₹25. You pay with a ₹100 note. How much change do you get, in rupees?
40. 40.7 + ? = 10

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