Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 108 · 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. 1.23 × 7 =
2. 2.Double 52 =
3. 3.12 + 11 =
4. 4.184 ÷ 4 =
5. 5.18 + 3 =
6. 6.45 + 6 =
7. 7.41 + 15 =
8. 8.15 + 7 =
9. 9.31 + 29 =
10. 10.51 + 44 =
11. 11.You buy a kite for ₹391 and pay with a ₹500 note. How much change do you get, in rupees?
12. 12.You start your homework at 2:05 and finish at 4:15. How many minutes did you work?
13. 13.15 + 9 =
14. 14.2 + ? = 10
15. 15.32 × 8 =
16. 16.17 × 8 =
17. 17.25 × 8 =
18. 18.Best estimate of 61 × 32? (a) 180 (b) 1800 (c) 18000
19. 19.Half of 186 =
20. 20.78 + 19 =
21. 21.27 + 29 =
22. 22.27 × 8 =
23. 23.32 + 82 =
24. 24.196 ÷ 4 =
25. 25.16 + 17 =
26. 26.9 + 10 =
27. 27.102 ÷ 6 =
28. 28.15 × 7 =
29. 29.You buy a storybook for ₹140 and pay with a ₹500 note. How much change do you get, in rupees?
30. 30.Best estimate of 196 + 339? (a) 700 (b) 300 (c) 500
31. 31.76 + 19 =
32. 32.23 × 5 =
33. 33.34 laddoos are packed in boxes of 3. How many laddoos are left over?
34. 34.26 + 27 =
35. 35.Best estimate of 126 + 205? (a) 100 (b) 300 (c) 500
36. 36.112 ÷ 8 =
37. 37.160 ÷ 8 =
38. 38.5% of ₹890 =
39. 39.A film starts at 7:10 and ends at 7:35. How many minutes long is the film?
40. 40.A train leaves at 6:50 and reaches the next city at 7:35. How many minutes is the journey?

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