Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 267 · 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. 1.31 × 8 =
2. 2.136 ÷ 8 =
3. 3.10 + 11 =
4. 4.232 ÷ 4 =
5. 5.124 − 91 =
6. 6.84 + 42 =
7. 7.You start your homework at 8:05 and finish at 11:00. How many minutes did you work?
8. 8.49 + 8 =
9. 9.231 ÷ 7 =
10. 10.76 + 21 =
11. 11.20 + 19 =
12. 12.14 + ? = 100
13. 13.26 + 28 =
14. 14.83 + 19 =
15. 15.29 + 71 =
16. 16.28² =
17. 17.Best estimate of 339 + 739? (a) 1000 (b) 800 (c) 1200
18. 18.You buy a kite for ₹40 and a pen for ₹28. You pay with a ₹100 note. How much change do you get, in rupees?
19. 19.791 + 99 =
20. 20.4 + ? = 10
21. 21.76 − 12 =
22. 22.32 + 83 =
23. 23.77 − 29 =
24. 24.27 + 26 =
25. 25.36 + 9 =
26. 26.29² =
27. 27.47 children stand in rows of 3. How many full rows can they make?
28. 28.80 − 14 =
29. 29.39 laddoos are packed in boxes of 4. How many laddoos are left over?
30. 30.317 − 298 =
31. 31.You buy a cricket ball for ₹15 and a pen for ₹28. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.216 ÷ 8 =
33. 33.A cricket match starts at 8:40 and the first innings ends at 9:30. How many minutes did the innings last?
34. 34.16² =
35. 35.93 × 5 =
36. 36.87 − 62 =
37. 37.Best estimate of 78 × 61? (a) 48000 (b) 480 (c) 4800
38. 38.19² =
39. 39.A film starts at 1:10 and ends at 2:55. How many minutes long is the film?
40. 40.110 − 76 =

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