Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 384 · 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. 1.12 + ? = 100
2. 2.Half of 196 =
3. 3.77 − 27 =
4. 4.1 + ? = 10
5. 5.15 + 6 =
6. 6.12 + 14 =
7. 7.You start your homework at 1:55 and finish at 2:50. How many minutes did you work?
8. 8.414 ÷ 9 =
9. 9.54 − 35 =
10. 10.50% of ₹70 =
11. 11.83 × 5 =
12. 12.You buy a kite for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
13. 13.13² =
14. 14.43 + 9 =
15. 15.226 − 179 =
16. 16.22² =
17. 17.You buy a storybook for ₹76 and pay with a ₹100 note. How much change do you get, in rupees?
18. 18.29² =
19. 19.77 + 5 =
20. 20.240 ÷ 4 =
21. 21.4 + ? = 10
22. 22.Half of 174 =
23. 23.34 × 9 =
24. 24.49 + 3 =
25. 25.16² =
26. 26.Best estimate of 48 × 17? (a) 10000 (b) 1000 (c) 100
27. 27.639 ÷ 9 =
28. 28.Half of 162 =
29. 29.A train leaves at 2:20 and reaches the next city at 4:55. How many minutes is the journey?
30. 30.204 ÷ 4 =
31. 31.19 + 6 =
32. 32.5 + ? = 10
33. 33.You buy a bag of mangoes for ₹13 and a pen for ₹16. You pay with a ₹100 note. How much change do you get, in rupees?
34. 34.Best estimate of 98 × 50? (a) 5000 (b) 50000 (c) 500
35. 35.17 + ? = 100
36. 36.You buy a pencil box for ₹32 and a pen for ₹30. You pay with a ₹100 note. How much change do you get, in rupees?
37. 37.85 − 72 =
38. 38.A film starts at 6:45 and ends at 7:25. How many minutes long is the film?
39. 39.192 ÷ 8 =
40. 40.49 laddoos are packed in boxes of 8. How many laddoos are left over?

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