Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 191 · 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. 1.349 − 99 =
2. 2.You buy a kite for ₹106 and pay with a ₹500 note. How much change do you get, in rupees?
3. 3.13² =
4. 4.You start your homework at 5:45 and finish at 7:10. How many minutes did you work?
5. 5.216 ÷ 4 =
6. 6.21² =
7. 7.69 − 38 =
8. 8.10% of ₹620 =
9. 9.50% of ₹380 =
10. 10.Double 68 =
11. 11.87 + 5 =
12. 12.You buy a kite for ₹68 and pay with a ₹100 note. How much change do you get, in rupees?
13. 13.14² =
14. 14.28 + 82 =
15. 15.13 + ? = 100
16. 16.18 + 19 =
17. 17.84 × 5 =
18. 18.89 + 8 =
19. 19.424 ÷ 8 =
20. 20.25% of ₹790 =
21. 21.25% of ₹430 =
22. 22.50% of ₹400 =
23. 23.1004 − 976 =
24. 24.33 + 15 =
25. 25.A film starts at 6:40 and ends at 7:15. How many minutes long is the film?
26. 26.Best estimate of 32 × 19? (a) 60 (b) 600 (c) 6000
27. 27.10% of ₹270 =
28. 28.Half of 98 =
29. 29.What is the remainder when 91 is divided by 6?
30. 30.88 − 54 =
31. 31.104 − 76 =
32. 32.21 children stand in rows of 4. How many full rows can they make?
33. 33.54 − 42 =
34. 34.67 + 4 =
35. 35.What is the remainder when 13 is divided by 3?
36. 36.82 − 22 =
37. 37.Double 69 =
38. 38.86 + ? = 100
39. 39.32 × 3 =
40. 40.455 ÷ 5 =

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