Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 824 · 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 732 + 385? (a) 1100 (b) 1300 (c) 900
2. 2.Best estimate of 42 × 18? (a) 80 (b) 8000 (c) 800
3. 3.26 + 19 =
4. 4.76 + ? = 100
5. 5.76 − 52 =
6. 6.5% of ₹490 =
7. 7.1003 − 985 =
8. 8.648 ÷ 9 =
9. 9.You buy a notebook for ₹94 and pay with a ₹100 note. How much change do you get, in rupees?
10. 10.520 − 482 =
11. 11.80 + ? = 100
12. 12.180 ÷ 4 =
13. 13.19 × 8 =
14. 14.19² =
15. 15.Half of 88 =
16. 16.50% of ₹270 =
17. 17.Best estimate of 877 + 727? (a) 1400 (b) 1600 (c) 1800
18. 18.You buy a cricket ball for ₹99 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.272 ÷ 8 =
20. 20.44 × 4 =
21. 21.17² =
22. 22.A train leaves at 7:10 and reaches the next city at 9:05. How many minutes is the journey?
23. 23.26 + 25 =
24. 24.94 − 69 =
25. 25.232 ÷ 4 =
26. 26.A train leaves at 3:35 and reaches the next city at 5:00. How many minutes is the journey?
27. 27.Best estimate of 180 + 380? (a) 600 (b) 800 (c) 400
28. 28.3 + ? = 10
29. 29.52 + 29 =
30. 30.66 children stand in rows of 7. How many full rows can they make?
31. 31.A film starts at 2:15 and ends at 3:45. How many minutes long is the film?
32. 32.A film starts at 6:40 and ends at 8:00. How many minutes long is the film?
33. 33.A train leaves at 2:10 and reaches the next city at 3:25. How many minutes is the journey?
34. 34.225 − 197 =
35. 35.59 − 25 =
36. 36.74 × 4 =
37. 37.15² =
38. 38.65 + 9 =
39. 39.679 ÷ 7 =
40. 40.290 + 99 =

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