Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 645 · 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. 1.737 + 99 =
2. 2.29 − 19 =
3. 3.10% of ₹130 =
4. 4.180 ÷ 5 =
5. 5.34 − 9 =
6. 6.12² =
7. 7.91 − 15 =
8. 8.1 + ? = 10
9. 9.Double 46 =
10. 10.Double 58 =
11. 11.A train leaves at 8:45 and reaches the next city at 9:35. How many minutes is the journey?
12. 12.54 − 35 =
13. 13.240 ÷ 4 =
14. 14.14 children stand in rows of 3. How many full rows can they make?
15. 15.31 × 8 =
16. 16.128 ÷ 4 =
17. 17.91 × 9 =
18. 18.6 + ? = 10
19. 19.25% of ₹820 =
20. 20.What is the remainder when 16 is divided by 3?
21. 21.A film starts at 2:35 and ends at 4:40. How many minutes long is the film?
22. 22.Best estimate of 87 × 31? (a) 2700 (b) 270 (c) 27000
23. 23.What is the remainder when 89 is divided by 6?
24. 24.23² =
25. 25.22 × 8 =
26. 26.296 ÷ 4 =
27. 27.5% of ₹90 =
28. 28.50% of ₹510 =
29. 29.541 + 99 =
30. 30.19 + 20 =
31. 31.314 − 288 =
32. 32.338 − 99 =
33. 33.21² =
34. 34.33 children stand in rows of 8. How many full rows can they make?
35. 35.Best estimate of 515 + 626? (a) 900 (b) 1300 (c) 1100
36. 36.64 + 85 =
37. 37.61 − 51 =
38. 38.You buy a pencil box for ₹30 and pay with a ₹100 note. How much change do you get, in rupees?
39. 39.What is the remainder when 139 is divided by 9?
40. 40.5% of ₹590 =

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