Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 536 · 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. 1.70 + 67 =
2. 2.68 + 8 =
3. 3.13 × 8 =
4. 4.19² =
5. 5.200 ÷ 4 =
6. 6.74 − 48 =
7. 7.22 children stand in rows of 3. How many full rows can they make?
8. 8.30 + 35 =
9. 9.Double 93 =
10. 10.40 × 4 =
11. 11.50% of ₹790 =
12. 12.4 + ? = 10
13. 13.A cricket match starts at 6:55 and the first innings ends at 7:20. How many minutes did the innings last?
14. 14.168 ÷ 8 =
15. 15.Best estimate of 225 + 135? (a) 500 (b) 100 (c) 300
16. 16.69 + ? = 100
17. 17.110 − 71 =
18. 18.8 + ? = 10
19. 19.15 + 14 =
20. 20.44 + ? = 100
21. 21.62 laddoos are packed in boxes of 9. How many laddoos are left over?
22. 22.92 ÷ 4 =
23. 23.45 + 6 =
24. 24.89 + 65 =
25. 25.15² =
26. 26.51 children stand in rows of 4. How many full rows can they make?
27. 27.57 + ? = 100
28. 28.38 laddoos are packed in boxes of 5. How many laddoos are left over?
29. 29.17² =
30. 30.27² =
31. 31.97 − 12 =
32. 32.A cricket match starts at 8:25 and the first innings ends at 10:00. How many minutes did the innings last?
33. 33.You start your homework at 2:45 and finish at 5:00. How many minutes did you work?
34. 34.17 + 19 =
35. 35.62 × 3 =
36. 36.5% of ₹160 =
37. 37.25% of ₹530 =
38. 38.89 + 84 =
39. 39.8 + 9 =
40. 40.44 × 7 =

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