Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 986 · 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. 1.43 + ? = 100
2. 2.You buy a pencil box for ₹19 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?
3. 3.67 + 9 =
4. 4.6 + ? = 10
5. 5.73 − 36 =
6. 6.56 + 51 =
7. 7.41 × 7 =
8. 8.38 − 9 =
9. 9.513 − 481 =
10. 10.12 × 4 =
11. 11.243 ÷ 3 =
12. 12.You buy a water bottle for ₹25 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
13. 13.7 + 9 =
14. 14.14 + ? = 100
15. 15.31 × 8 =
16. 16.25% of ₹610 =
17. 17.48 + 83 =
18. 18.7 + ? = 10
19. 19.6 + 7 =
20. 20.18 + 9 =
21. 21.53 − 30 =
22. 22.66 + 6 =
23. 23.1 + ? = 10
24. 24.Best estimate of 377 + 295? (a) 900 (b) 700 (c) 500
25. 25.380 ÷ 5 =
26. 26.510 − 480 =
27. 27.56 + 6 =
28. 28.Best estimate of 16 × 86? (a) 18000 (b) 180 (c) 1800
29. 29.You buy a box of crayons for ₹29 and a pen for ₹25. You pay with a ₹100 note. How much change do you get, in rupees?
30. 30.13 children stand in rows of 3. How many full rows can they make?
31. 31.23 + 24 =
32. 32.22² =
33. 33.36 + 7 =
34. 34.5% of ₹140 =
35. 35.28 + ? = 100
36. 36.87 × 8 =
37. 37.318 − 294 =
38. 38.28 × 8 =
39. 39.17 + 16 =
40. 40.25 + ? = 100

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