Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 659 · 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. 1.124 ÷ 4 =
2. 2.66 children stand in rows of 7. How many full rows can they make?
3. 3.48 + 4 =
4. 4.25% of ₹240 =
5. 5.68 + 9 =
6. 6.5% of ₹670 =
7. 7.32 + 74 =
8. 8.330 ÷ 5 =
9. 9.100 − 71 =
10. 10.Best estimate of 178 + 477? (a) 700 (b) 900 (c) 500
11. 11.24 + 26 =
12. 12.62 × 4 =
13. 13.8 + ? = 10
14. 14.You buy a kite for ₹89 and pay with a ₹100 note. How much change do you get, in rupees?
15. 15.You buy a box of crayons for ₹70 and pay with a ₹100 note. How much change do you get, in rupees?
16. 16.87 × 9 =
17. 17.117 − 91 =
18. 18.79 − 43 =
19. 19.23 + 25 =
20. 20.76 − 44 =
21. 21.19 + 4 =
22. 22.27² =
23. 23.19 laddoos are packed in boxes of 4. How many laddoos are left over?
24. 24.Best estimate of 66 × 27? (a) 21000 (b) 2100 (c) 210
25. 25.A film starts at 1:15 and ends at 3:40. How many minutes long is the film?
26. 26.63 − 14 =
27. 27.You start your homework at 4:35 and finish at 5:40. How many minutes did you work?
28. 28.84 + ? = 100
29. 29.4 + ? = 10
30. 30.80 children stand in rows of 6. How many full rows can they make?
31. 31.462 ÷ 6 =
32. 32.21² =
33. 33.You buy a water bottle for ₹258 and pay with a ₹500 note. How much change do you get, in rupees?
34. 34.79 laddoos are packed in boxes of 7. How many laddoos are left over?
35. 35.160 ÷ 4 =
36. 36.Half of 28 =
37. 37.1 + ? = 10
38. 38.7 + ? = 10
39. 39.A film starts at 5:40 and ends at 7:45. How many minutes long is the film?
40. 40.14 × 8 =

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