Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 216 · 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.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
2. 2.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
3. 3.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
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
6. 6.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
7. 7.🧩 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
8. 8.🧩 Rohan is 12 years old. Ananya is 5 years older than Rohan. How old is Ananya? (a) 18 (b) 5 (c) 17 (d) not enough info
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
10. 10.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 56 (d) 49
11. 11.🧩 Rohan is 10 years old. Nisha is older than Rohan. How old is Nisha? (a) 11 (b) 15 (c) 12 (d) not enough info
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
14. 14.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
15. 15.🧩 Ananya is 10 years old. Ishaan is older than Ananya. How old is Ishaan? (a) 11 (b) not enough info (c) 15 (d) 12
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
18. 18.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
19. 19.🥭 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, mangoes match (c) no, check more (d) yes, it is certain
20. 20.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
21. 21.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
22. 22.🧩 Aarav bought 2 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹60 (d) ₹35
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
24. 24.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
25. 25.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
26. 26.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 2 PM
27. 27.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
28. 28.🧩 Nisha is 6 years old. Ananya is 9 years older than Nisha. How old is Ananya? (a) 16 (b) 15 (c) not enough info (d) 9
29. 29.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
30. 30.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
31. 31.🧩 Nisha bought 2 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹30 (c) ₹25 (d) ₹50
32. 32.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
33. 33.🧩 A box has 3 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 11 (b) not enough info (c) 24 (d) 32
34. 34.🧩 Diya bought 2 notebooks and a lunch box for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹118 (b) ₹120 (c) ₹60 (d) not enough info
35. 35.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
36. 36.🧩 A box has 3 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 28 (b) not enough info (c) 10 (d) 21
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
38. 38.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 48 (b) 42 (c) not enough info (d) 13
39. 39.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) not enough info (b) 10 (c) 5 (d) 50
40. 40.🧩 Meera bought 3 kites and a lunch box for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹57 (c) ₹20 (d) not enough info

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