Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 213 · 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. 1.226 − 177 =
2. 2.72 + 19 =
3. 3.80 + 69 =
4. 4.105 − 29 =
5. 5.Best estimate of 672 + 751? (a) 1500 (b) 1700 (c) 1300
6. 6.You buy a bag of mangoes for ₹445 and pay with a ₹500 note. How much change do you get, in rupees?
7. 7.25% of ₹800 =
8. 8.27 + 9 =
9. 9.Half of 114 =
10. 10.9 + ? = 10
11. 11.A train leaves at 4:40 and reaches the next city at 7:40. How many minutes is the journey?
12. 12.86 − 21 =
13. 13.71 − 29 =
14. 14.9 + 10 =
15. 15.67 − 21 =
16. 16.Best estimate of 370 + 442? (a) 600 (b) 800 (c) 1000
17. 17.544 + 99 =
18. 18.19 + 20 =
19. 19.50 + ? = 100
20. 20.200 ÷ 4 =
21. 21.13² =
22. 22.58 − 30 =
23. 23.63 + ? = 100
24. 24.59 + 45 =
25. 25.28 + 19 =
26. 26.What is the remainder when 49 is divided by 4?
27. 27.Half of 26 =
28. 28.49 + 9 =
29. 29.17 + 9 =
30. 30.316 − 290 =
31. 31.13 × 4 =
32. 32.You buy a box of crayons for ₹89 and pay with a ₹100 note. How much change do you get, in rupees?
33. 33.68 − 43 =
34. 34.228 ÷ 4 =
35. 35.Half of 28 =
36. 36.17² =
37. 37.You buy a cricket ball for ₹36 and pay with a ₹100 note. How much change do you get, in rupees?
38. 38.5% of ₹580 =
39. 39.55 + 9 =
40. 40.25² =

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