Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 142 · 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. 1.29 + 4 =
2. 2.21² =
3. 3.You start your homework at 4:00 and finish at 4:55. How many minutes did you work?
4. 4.32 × 8 =
5. 5.You buy a water bottle for ₹213 and pay with a ₹500 note. How much change do you get, in rupees?
6. 6.24² =
7. 7.15 + 8 =
8. 8.66 ÷ 3 =
9. 9.38 + 8 =
10. 10.88 + 9 =
11. 11.96 ÷ 4 =
12. 12.59 − 37 =
13. 13.13 + ? = 100
14. 14.79 + 2 =
15. 15.52 − 32 =
16. 16.Half of 126 =
17. 17.Double 41 =
18. 18.295 ÷ 5 =
19. 19.238 ÷ 7 =
20. 20.75 + 9 =
21. 21.1030 − 980 =
22. 22.26² =
23. 23.54 children stand in rows of 7. How many full rows can they make?
24. 24.73 − 27 =
25. 25.110 − 60 =
26. 26.41 children stand in rows of 3. How many full rows can they make?
27. 27.48 + 4 =
28. 28.148 ÷ 4 =
29. 29.You buy a storybook for ₹43 and a pen for ₹12. You pay with a ₹100 note. How much change do you get, in rupees?
30. 30.18² =
31. 31.9 + ? = 10
32. 32.Best estimate of 879 + 286? (a) 1400 (b) 1000 (c) 1200
33. 33.56 × 9 =
34. 34.27 × 9 =
35. 35.What is the remainder when 22 is divided by 5?
36. 36.A train leaves at 4:20 and reaches the next city at 5:30. How many minutes is the journey?
37. 37.151 + 99 =
38. 38.85 × 4 =
39. 39.88 + ? = 100
40. 40.11² =

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