Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 117 · 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.Half of 122 =
2. 2.29 + ? = 100
3. 3.4 + ? = 10
4. 4.What is the remainder when 76 is divided by 5?
5. 5.29 − 19 =
6. 6.You buy a pencil box for ₹95 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.A film starts at 3:35 and ends at 5:30. How many minutes long is the film?
8. 8.22² =
9. 9.43 − 9 =
10. 10.12 × 8 =
11. 11.89 + 9 =
12. 12.1022 − 998 =
13. 13.65 + 9 =
14. 14.10 + 12 =
15. 15.Best estimate of 239 + 525? (a) 500 (b) 900 (c) 700
16. 16.39 ÷ 3 =
17. 17.192 ÷ 4 =
18. 18.You buy a kite for ₹43 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.110 − 66 =
20. 20.256 ÷ 8 =
21. 21.12 + 11 =
22. 22.80 + 42 =
23. 23.You buy a pencil box for ₹40 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
24. 24.42 laddoos are packed in boxes of 9. How many laddoos are left over?
25. 25.14 + 16 =
26. 26.27² =
27. 27.176 ÷ 4 =
28. 28.110 − 63 =
29. 29.5 + 8 =
30. 30.Best estimate of 96 × 86? (a) 900 (b) 90000 (c) 9000
31. 31.58 + 6 =
32. 32.27 × 8 =
33. 33.232 ÷ 8 =
34. 34.17 + 9 =
35. 35.25% of ₹400 =
36. 36.55 + 9 =
37. 37.230 − 197 =
38. 38.Half of 174 =
39. 39.70 + 19 =
40. 40.79 × 4 =

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