Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 932 · 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 − 43 =
2. 2.5 + ? = 10
3. 3.24 + 26 =
4. 4.76 + 84 =
5. 5.Best estimate of 56 × 24? (a) 12000 (b) 1200 (c) 120
6. 6.You buy a storybook for ₹40 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.10% of ₹790 =
8. 8.You buy a kite for ₹267 and pay with a ₹500 note. How much change do you get, in rupees?
9. 9.59 + 9 =
10. 10.45 − 29 =
11. 11.71 + 76 =
12. 12.Best estimate of 44 × 67? (a) 280 (b) 28000 (c) 2800
13. 13.189 ÷ 3 =
14. 14.27 + 5 =
15. 15.24² =
16. 16.You buy a storybook for ₹45 and a pen for ₹22. You pay with a ₹100 note. How much change do you get, in rupees?
17. 17.21² =
18. 18.48 + 9 =
19. 19.13 + 12 =
20. 20.22 + 23 =
21. 21.56 + 37 =
22. 22.144 ÷ 8 =
23. 23.A film starts at 6:45 and ends at 8:30. How many minutes long is the film?
24. 24.84 × 3 =
25. 25.1 + ? = 10
26. 26.29 laddoos are packed in boxes of 7. How many laddoos are left over?
27. 27.44 × 8 =
28. 28.5% of ₹330 =
29. 29.14² =
30. 30.10% of ₹310 =
31. 31.A train leaves at 1:20 and reaches the next city at 2:30. How many minutes is the journey?
32. 32.95 ÷ 5 =
33. 33.297 ÷ 3 =
34. 34.79 + 52 =
35. 35.12² =
36. 36.7 + 6 =
37. 37.94 × 3 =
38. 38.14 + 15 =
39. 39.27 + 18 =
40. 40.30 + ? = 100

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