Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 217 · 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.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
2. 2.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
7. 7.🧩 Arjun is 7 years old. Aarav is older than Arjun. How old is Aarav? (a) 8 (b) not enough info (c) 12 (d) 9
8. 8.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
10. 10.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
11. 11.🧩 Kabir bought 5 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹10 (c) ₹15 (d) ₹50
12. 12.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 13 (b) not enough info (c) 42 (d) 49
13. 13.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
14. 14.🧩 Arjun is 8 years old. Ananya is 5 years older than Arjun. How old is Ananya? (a) 5 (b) 13 (c) not enough info (d) 14
15. 15.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
16. 16.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
18. 18.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) yes, mangoes match (d) no, check more
19. 19.🧩 Ishaan is 12 years old. Kabir is older than Ishaan. How old is Kabir? (a) 13 (b) not enough info (c) 14 (d) 17
20. 20.🧩 Arjun bought 6 balls and a cap for ₹220 in all. Each ball cost the same. What did one ball cost? (a) ₹36 (b) ₹214 (c) ₹220 (d) not enough info
21. 21.🧩 Arjun bought 2 kites and a lunch box for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹158 (b) ₹160 (c) not enough info (d) ₹80
22. 22.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
26. 26.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
27. 27.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
29. 29.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
30. 30.🧩 A box has 6 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 48 (b) 56 (c) not enough info (d) 14
31. 31.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 3 PM
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
33. 33.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
34. 34.🧩 Kabir is 7 years old. Meera is 3 years older than Kabir. How old is Meera? (a) 11 (b) 10 (c) 3 (d) not enough info
35. 35.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
36. 36.🧩 A box has 3 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 16 (b) not enough info (c) 12 (d) 7
37. 37.🧩 Aarav is 12 years old. Tara is 4 years older than Aarav. How old is Tara? (a) not enough info (b) 17 (c) 4 (d) 16
38. 38.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) not enough info (d) 6 PM
39. 39.🧩 Ishaan is 6 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 8 (b) 7 (c) not enough info (d) 11
40. 40.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence

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