Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 310 · 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. 1.63 − 18 =
2. 2.192 ÷ 8 =
3. 3.Best estimate of 263 + 179? (a) 300 (b) 500 (c) 700
4. 4.Best estimate of 28 × 28? (a) 9000 (b) 900 (c) 90
5. 5.Half of 74 =
6. 6.27 + 9 =
7. 7.6 + 7 =
8. 8.321 − 295 =
9. 9.50% of ₹460 =
10. 10.A train leaves at 1:30 and reaches the next city at 2:50. How many minutes is the journey?
11. 11.75 + 54 =
12. 12.504 − 496 =
13. 13.14 + 15 =
14. 14.You buy a storybook for ₹37 and a pen for ₹40. You pay with a ₹100 note. How much change do you get, in rupees?
15. 15.234 ÷ 3 =
16. 16.64 ÷ 4 =
17. 17.A train leaves at 6:40 and reaches the next city at 8:20. How many minutes is the journey?
18. 18.22 + 24 =
19. 19.322 − 286 =
20. 20.112 ÷ 8 =
21. 21.35 − 29 =
22. 22.A train leaves at 5:50 and reaches the next city at 6:30. How many minutes is the journey?
23. 23.11² =
24. 24.85 − 18 =
25. 25.588 ÷ 6 =
26. 26.You buy a box of crayons for ₹199 and pay with a ₹500 note. How much change do you get, in rupees?
27. 27.27² =
28. 28.54 − 21 =
29. 29.A film starts at 5:05 and ends at 7:15. How many minutes long is the film?
30. 30.63 − 29 =
31. 31.What is the remainder when 50 is divided by 8?
32. 32.34 + 9 =
33. 33.25 laddoos are packed in boxes of 4. How many laddoos are left over?
34. 34.69 − 31 =
35. 35.52 × 5 =
36. 36.16 + 5 =
37. 37.28 + 82 =
38. 38.65 + 9 =
39. 39.Double 67 =
40. 40.A film starts at 3:35 and ends at 6:50. How many minutes long is the film?

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