Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 743 · 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. 1.285 ÷ 3 =
2. 2.58 + 9 =
3. 3.Half of 70 =
4. 4.48 × 4 =
5. 5.94 − 21 =
6. 6.18² =
7. 7.34 × 4 =
8. 8.25% of ₹530 =
9. 9.518 − 486 =
10. 10.You buy a notebook for ₹48 and pay with a ₹100 note. How much change do you get, in rupees?
11. 11.16 laddoos are packed in boxes of 3. How many laddoos are left over?
12. 12.37 + 5 =
13. 13.65 ÷ 5 =
14. 14.62 − 26 =
15. 15.53 − 21 =
16. 16.Double 27 =
17. 17.A train leaves at 5:35 and reaches the next city at 8:10. How many minutes is the journey?
18. 18.123 − 90 =
19. 19.Best estimate of 52 × 12? (a) 50 (b) 5000 (c) 500
20. 20.64 − 44 =
21. 21.25² =
22. 22.Half of 94 =
23. 23.57 − 19 =
24. 24.You buy a bag of mangoes for ₹294 and pay with a ₹500 note. How much change do you get, in rupees?
25. 25.392 − 99 =
26. 26.Double 94 =
27. 27.109 − 61 =
28. 28.You start your homework at 4:20 and finish at 5:40. How many minutes did you work?
29. 29.10 + 11 =
30. 30.112 ÷ 4 =
31. 31.Double 34 =
32. 32.68 − 26 =
33. 33.What is the remainder when 107 is divided by 7?
34. 34.9 + ? = 10
35. 35.25 + 26 =
36. 36.32 × 4 =
37. 37.63 − 31 =
38. 38.Half of 116 =
39. 39.90 − 46 =
40. 40.264 ÷ 6 =

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