Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 55 · 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. 1.6 + 5 =
2. 2.58 − 31 =
3. 3.14 + 15 =
4. 4.22 − 19 =
5. 5.You buy a bag of mangoes for ₹165 and pay with a ₹500 note. How much change do you get, in rupees?
6. 6.You buy a storybook for ₹80 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.45 × 4 =
8. 8.50% of ₹590 =
9. 9.41 + ? = 100
10. 10.276 ÷ 4 =
11. 11.26 + 28 =
12. 12.You buy a bag of mangoes for ₹32 and a pen for ₹29. You pay with a ₹100 note. How much change do you get, in rupees?
13. 13.Best estimate of 716 + 209? (a) 700 (b) 1100 (c) 900
14. 14.50% of ₹790 =
15. 15.5% of ₹170 =
16. 16.21 × 4 =
17. 17.A train leaves at 1:45 and reaches the next city at 2:15. How many minutes is the journey?
18. 18.368 ÷ 8 =
19. 19.22 × 8 =
20. 20.You start your homework at 6:20 and finish at 9:20. How many minutes did you work?
21. 21.90 ÷ 6 =
22. 22.Best estimate of 574 + 321? (a) 700 (b) 900 (c) 1100
23. 23.30 × 8 =
24. 24.12² =
25. 25.35 + 19 =
26. 26.You buy a water bottle for ₹13 and a pen for ₹14. You pay with a ₹100 note. How much change do you get, in rupees?
27. 27.111 children stand in rows of 7. How many full rows can they make?
28. 28.66 + 46 =
29. 29.28 + 29 =
30. 30.29 + 31 =
31. 31.59 + 23 =
32. 32.113 − 82 =
33. 33.Half of 196 =
34. 34.27 + 29 =
35. 35.5 + 9 =
36. 36.19 children stand in rows of 3. How many full rows can they make?
37. 37.96 × 4 =
38. 38.You buy a notebook for ₹25 and pay with a ₹100 note. How much change do you get, in rupees?
39. 39.21 + 22 =
40. 40.92 − 29 =

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