Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 31 · 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. 1.26² =
2. 2.73 + ? = 100
3. 3.11 + 10 =
4. 4.104 − 75 =
5. 5.Half of 94 =
6. 6.50% of ₹180 =
7. 7.84 − 71 =
8. 8.44 + ? = 100
9. 9.Best estimate of 19 × 57? (a) 120 (b) 12000 (c) 1200
10. 10.A cricket match starts at 6:55 and the first innings ends at 10:05. How many minutes did the innings last?
11. 11.47 children stand in rows of 8. How many full rows can they make?
12. 12.21 + 20 =
13. 13.You buy a box of crayons for ₹119 and pay with a ₹500 note. How much change do you get, in rupees?
14. 14.20 + ? = 100
15. 15.85 + 7 =
16. 16.15 + 16 =
17. 17.A cricket match starts at 1:50 and the first innings ends at 3:00. How many minutes did the innings last?
18. 18.45 + 6 =
19. 19.86 + 9 =
20. 20.18 + ? = 100
21. 21.21 × 5 =
22. 22.A cricket match starts at 6:10 and the first innings ends at 8:25. How many minutes did the innings last?
23. 23.24² =
24. 24.24 × 8 =
25. 25.65 + 53 =
26. 26.35 × 5 =
27. 27.You buy a kite for ₹18 and a pen for ₹14. You pay with a ₹100 note. How much change do you get, in rupees?
28. 28.58 × 6 =
29. 29.138 ÷ 3 =
30. 30.Double 24 =
31. 31.17 × 9 =
32. 32.A film starts at 1:05 and ends at 2:55. How many minutes long is the film?
33. 33.Half of 120 =
34. 34.85 + 9 =
35. 35.81 × 5 =
36. 36.1022 − 987 =
37. 37.664 − 99 =
38. 38.18 + 3 =
39. 39.Half of 80 =
40. 40.108 ÷ 3 =

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths