Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 188 · 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. 1.54 + ? = 100
2. 2.52 ÷ 4 =
3. 3.32 − 19 =
4. 4.A cricket match starts at 1:45 and the first innings ends at 4:30. How many minutes did the innings last?
5. 5.691 − 99 =
6. 6.You buy a kite for ₹98 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.Best estimate of 48 × 23? (a) 1000 (b) 10000 (c) 100
8. 8.16 − 9 =
9. 9.32 + 9 =
10. 10.29 × 9 =
11. 11.94 − 71 =
12. 12.164 ÷ 4 =
13. 13.Half of 158 =
14. 14.10% of ₹280 =
15. 15.You buy a notebook for ₹30 and a pen for ₹22. You pay with a ₹100 note. How much change do you get, in rupees?
16. 16.46 × 9 =
17. 17.You buy a water bottle for ₹410 and pay with a ₹500 note. How much change do you get, in rupees?
18. 18.40 × 8 =
19. 19.You buy a box of crayons for ₹70 and pay with a ₹100 note. How much change do you get, in rupees?
20. 20.5% of ₹150 =
21. 21.You buy a storybook for ₹118 and pay with a ₹500 note. How much change do you get, in rupees?
22. 22.Half of 56 =
23. 23.17² =
24. 24.Best estimate of 829 + 427? (a) 1400 (b) 1000 (c) 1200
25. 25.20 + 22 =
26. 26.57 + 5 =
27. 27.Best estimate of 60 × 60? (a) 360 (b) 3600 (c) 36000
28. 28.19 + 18 =
29. 29.63 + 49 =
30. 30.58 − 37 =
31. 31.You start your homework at 6:45 and finish at 7:40. How many minutes did you work?
32. 32.45 − 9 =
33. 33.39 × 3 =
34. 34.50% of ₹480 =
35. 35.88 × 6 =
36. 36.71 × 3 =
37. 37.77 − 29 =
38. 38.63 − 9 =
39. 39.61 × 4 =
40. 40.105 − 56 =

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