Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 866 · 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. 1.25 + 24 =
2. 2.8 + ? = 10
3. 3.99 − 69 =
4. 4.69 children stand in rows of 6. How many full rows can they make?
5. 5.88 + 4 =
6. 6.2 + ? = 10
7. 7.A film starts at 4:20 and ends at 5:30. How many minutes long is the film?
8. 8.10% of ₹450 =
9. 9.48 ÷ 4 =
10. 10.63 + ? = 100
11. 11.19 children stand in rows of 3. How many full rows can they make?
12. 12.A train leaves at 6:40 and reaches the next city at 7:35. How many minutes is the journey?
13. 13.25 + 6 =
14. 14.10 + 9 =
15. 15.25% of ₹180 =
16. 16.64 ÷ 4 =
17. 17.19 × 4 =
18. 18.36 × 5 =
19. 19.128 ÷ 8 =
20. 20.61 children stand in rows of 7. How many full rows can they make?
21. 21.68 + 19 =
22. 22.Best estimate of 87 × 26? (a) 2700 (b) 27000 (c) 270
23. 23.18 + 29 =
24. 24.5% of ₹420 =
25. 25.64 − 29 =
26. 26.225 − 198 =
27. 27.84 ÷ 4 =
28. 28.14² =
29. 29.Double 34 =
30. 30.28 + ? = 100
31. 31.20 laddoos are packed in boxes of 3. How many laddoos are left over?
32. 32.71 + ? = 100
33. 33.Best estimate of 328 + 446? (a) 700 (b) 500 (c) 900
34. 34.Half of 58 =
35. 35.You buy a box of crayons for ₹19 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
36. 36.58 × 4 =
37. 37.27 + 48 =
38. 38.You start your homework at 2:05 and finish at 5:05. How many minutes did you work?
39. 39.22² =
40. 40.77 children stand in rows of 8. How many full rows can they make?

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