Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 501 · 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. 1.415 ÷ 5 =
2. 2.Best estimate of 40 × 84? (a) 32000 (b) 3200 (c) 320
3. 3.11² =
4. 4.15² =
5. 5.You start your homework at 7:50 and finish at 10:15. How many minutes did you work?
6. 6.84 ÷ 4 =
7. 7.10% of ₹650 =
8. 8.84 − 62 =
9. 9.211 − 194 =
10. 10.You start your homework at 3:10 and finish at 5:40. How many minutes did you work?
11. 11.55 + 18 =
12. 12.40 + 36 =
13. 13.78 + ? = 100
14. 14.5% of ₹140 =
15. 15.28 + 8 =
16. 16.84 × 9 =
17. 17.26 + 28 =
18. 18.Best estimate of 137 + 157? (a) 500 (b) 100 (c) 300
19. 19.38 children stand in rows of 4. How many full rows can they make?
20. 20.40 + 9 =
21. 21.77 + 22 =
22. 22.97 − 75 =
23. 23.36 × 4 =
24. 24.22 + ? = 100
25. 25.38 + 19 =
26. 26.86 + 6 =
27. 27.You buy a box of crayons for ₹477 and pay with a ₹500 note. How much change do you get, in rupees?
28. 28.5% of ₹160 =
29. 29.80 children stand in rows of 7. How many full rows can they make?
30. 30.27² =
31. 31.Best estimate of 61 × 56? (a) 360 (b) 36000 (c) 3600
32. 32.A cricket match starts at 2:10 and the first innings ends at 5:30. How many minutes did the innings last?
33. 33.35 × 4 =
34. 34.90 − 21 =
35. 35.7 + ? = 10
36. 36.63 + 49 =
37. 37.37 + ? = 100
38. 38.26 × 3 =
39. 39.1 + ? = 10
40. 40.Best estimate of 321 + 853? (a) 1200 (b) 1400 (c) 1000

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