Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 131 · 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.Best estimate of 521 + 794? (a) 1500 (b) 1300 (c) 1100
2. 2.You buy a storybook for ₹413 and pay with a ₹500 note. How much change do you get, in rupees?
3. 3.26 + ? = 100
4. 4.30 + 32 =
5. 5.Best estimate of 283 + 301? (a) 600 (b) 400 (c) 800
6. 6.26 × 3 =
7. 7.78 ÷ 3 =
8. 8.Half of 186 =
9. 9.208 ÷ 8 =
10. 10.69 children stand in rows of 5. How many full rows can they make?
11. 11.56 ÷ 4 =
12. 12.89 − 29 =
13. 13.68 − 38 =
14. 14.34 + 29 =
15. 15.55 + 9 =
16. 16.A train leaves at 6:55 and reaches the next city at 9:30. How many minutes is the journey?
17. 17.53 + 85 =
18. 18.28 + 7 =
19. 19.515 − 489 =
20. 20.466 − 99 =
21. 21.5% of ₹500 =
22. 22.You buy a water bottle for ₹30 and pay with a ₹100 note. How much change do you get, in rupees?
23. 23.12 × 9 =
24. 24.25% of ₹100 =
25. 25.A train leaves at 6:55 and reaches the next city at 9:45. How many minutes is the journey?
26. 26.Best estimate of 122 + 729? (a) 600 (b) 1000 (c) 800
27. 27.527 − 480 =
28. 28.Double 16 =
29. 29.120 − 83 =
30. 30.320 ÷ 8 =
31. 31.13 × 8 =
32. 32.A cricket match starts at 5:10 and the first innings ends at 6:55. How many minutes did the innings last?
33. 33.44 × 4 =
34. 34.66 − 19 =
35. 35.A train leaves at 1:55 and reaches the next city at 2:35. How many minutes is the journey?
36. 36.24² =
37. 37.14² =
38. 38.60 − 38 =
39. 39.28 + ? = 100
40. 40.10% of ₹40 =

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