Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 784 · 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.You buy a cricket ball for ₹15 and pay with a ₹100 note. How much change do you get, in rupees?
2. 2.89 + 6 =
3. 3.Half of 32 =
4. 4.331 − 99 =
5. 5.19 + 6 =
6. 6.81 + 18 =
7. 7.25 × 8 =
8. 8.25% of ₹290 =
9. 9.You buy a storybook for ₹25 and pay with a ₹100 note. How much change do you get, in rupees?
10. 10.200 ÷ 8 =
11. 11.You buy a kite for ₹56 and pay with a ₹100 note. How much change do you get, in rupees?
12. 12.4 + ? = 10
13. 13.311 − 292 =
14. 14.240 ÷ 8 =
15. 15.Best estimate of 337 + 766? (a) 1300 (b) 900 (c) 1100
16. 16.17² =
17. 17.200 ÷ 4 =
18. 18.26 + ? = 100
19. 19.A train leaves at 1:35 and reaches the next city at 2:05. How many minutes is the journey?
20. 20.Double 81 =
21. 21.1027 − 996 =
22. 22.66 + 58 =
23. 23.73 − 17 =
24. 24.13 + 14 =
25. 25.74 + 41 =
26. 26.86 × 4 =
27. 27.176 ÷ 8 =
28. 28.16² =
29. 29.60 ÷ 4 =
30. 30.46 + ? = 100
31. 31.94 − 18 =
32. 32.25 children stand in rows of 4. How many full rows can they make?
33. 33.Half of 190 =
34. 34.29² =
35. 35.24 + 23 =
36. 36.A train leaves at 2:10 and reaches the next city at 2:55. How many minutes is the journey?
37. 37.529 − 482 =
38. 38.50% of ₹40 =
39. 39.66 + 29 =
40. 40.214 + 99 =

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