Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 441 · 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. 1.96 × 9 =
2. 2.99 − 71 =
3. 3.256 ÷ 8 =
4. 4.24² =
5. 5.55 + 6 =
6. 6.12 × 4 =
7. 7.You buy a cricket ball for ₹49 and pay with a ₹100 note. How much change do you get, in rupees?
8. 8.You buy a box of crayons for ₹92 and pay with a ₹100 note. How much change do you get, in rupees?
9. 9.25 + 27 =
10. 10.18² =
11. 11.Half of 62 =
12. 12.84 − 21 =
13. 13.11² =
14. 14.83 + 38 =
15. 15.75 + 6 =
16. 16.74 × 4 =
17. 17.You start your homework at 3:35 and finish at 6:15. How many minutes did you work?
18. 18.A cricket match starts at 7:25 and the first innings ends at 10:25. How many minutes did the innings last?
19. 19.Half of 170 =
20. 20.27 + 9 =
21. 21.204 − 185 =
22. 22.39 + 5 =
23. 23.280 + 99 =
24. 24.47 laddoos are packed in boxes of 7. How many laddoos are left over?
25. 25.308 − 288 =
26. 26.Best estimate of 286 + 851? (a) 1400 (b) 1200 (c) 1000
27. 27.11 + 10 =
28. 28.8 + 9 =
29. 29.19 + 21 =
30. 30.23 + 25 =
31. 31.1 + ? = 10
32. 32.75 − 28 =
33. 33.Half of 176 =
34. 34.97 × 8 =
35. 35.55 + 9 =
36. 36.19² =
37. 37.61 + 29 =
38. 38.56 + 5 =
39. 39.Best estimate of 23 × 20? (a) 40 (b) 4000 (c) 400
40. 40.18 children stand in rows of 4. How many full rows can they make?

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