Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 90 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
2. 2.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
3. 3.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 9 PM
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Nisha is 7 years old. Diya is 2 years older than Nisha. How old is Diya? (a) 9 (b) not enough info (c) 2 (d) 10
6. 6.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) yes, it is certain (d) no mango is sweet
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
9. 9.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
10. 10.🧩 Ananya is 6 years old. Ishaan is older than Ananya. How old is Ishaan? (a) not enough info (b) 11 (c) 8 (d) 7
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
13. 13.🧩 A box has 6 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 12 (b) 42 (c) 36 (d) not enough info
14. 14.🧩 Kabir bought 2 notebooks and a cap for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹158 (b) ₹80 (c) ₹160 (d) not enough info
15. 15.🧩 Meera is 6 years old. Ananya is 3 years older than Meera. How old is Ananya? (a) 3 (b) 10 (c) 9 (d) not enough info
16. 16.🧩 Meera bought 6 pens and a lunch box for ₹130 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹21 (c) ₹124 (d) ₹130
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
20. 20.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
23. 23.🧩 Saanvi is 11 years old. Rohan is 4 years older than Saanvi. How old is Rohan? (a) not enough info (b) 4 (c) 16 (d) 15
24. 24.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
25. 25.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) not enough info (b) 14 (c) 7 (d) 70
26. 26.🧩 Kabir bought 5 markers and a water bottle for ₹230 in all. Each marker cost the same. What did one marker cost? (a) ₹230 (b) ₹46 (c) not enough info (d) ₹225
27. 27.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Ananya bought 6 mangoes for ₹210 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹210 (c) ₹35 (d) not enough info
29. 29.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
30. 30.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
32. 32.🧩 Diya is 6 years old. Nisha is 9 years older than Diya. How old is Nisha? (a) not enough info (b) 9 (c) 16 (d) 15
33. 33.🧩 Saanvi is 12 years old. Tara is 3 years older than Saanvi. How old is Tara? (a) 15 (b) not enough info (c) 16 (d) 3
34. 34.🧩 Tara bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) not enough info (c) ₹105 (d) ₹35
35. 35.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
37. 37.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
38. 38.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box has 7 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 32 (b) not enough info (c) 11 (d) 28
40. 40.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info

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