Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 209 · 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 357 + 757? (a) 1000 (b) 1400 (c) 1200
2. 2.32 + 38 =
3. 3.48 − 9 =
4. 4.Best estimate of 73 × 31? (a) 21000 (b) 2100 (c) 210
5. 5.26 × 9 =
6. 6.A film starts at 4:00 and ends at 7:05. How many minutes long is the film?
7. 7.84 + ? = 100
8. 8.64 + 52 =
9. 9.A train leaves at 4:05 and reaches the next city at 6:45. How many minutes is the journey?
10. 10.130 − 75 =
11. 11.13² =
12. 12.56 + 41 =
13. 13.504 − 478 =
14. 14.54 + ? = 100
15. 15.You buy a notebook for ₹43 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?
16. 16.78 + 6 =
17. 17.23 + 24 =
18. 18.21 + ? = 100
19. 19.8 + ? = 10
20. 20.5 + ? = 10
21. 21.38 + 5 =
22. 22.82 − 68 =
23. 23.14² =
24. 24.7 + ? = 10
25. 25.Double 49 =
26. 26.1 + ? = 10
27. 27.60 + 82 =
28. 28.33 × 8 =
29. 29.117 ÷ 9 =
30. 30.You start your homework at 3:05 and finish at 5:15. How many minutes did you work?
31. 31.23 × 4 =
32. 32.A film starts at 7:30 and ends at 8:35. How many minutes long is the film?
33. 33.16 + 5 =
34. 34.A cricket match starts at 6:10 and the first innings ends at 8:35. How many minutes did the innings last?
35. 35.65 − 45 =
36. 36.32 children stand in rows of 3. How many full rows can they make?
37. 37.107 − 95 =
38. 38.A film starts at 2:35 and ends at 3:15. How many minutes long is the film?
39. 39.16 + 18 =
40. 40.You buy a storybook for ₹40 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?

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