Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 52 · 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? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Saanvi bought 3 pens and a bag for ₹230 in all. Each pen cost the same. What did one pen cost? (a) ₹230 (b) ₹227 (c) not enough info (d) ₹76
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Kabir is 8 years old. Saanvi is 5 years older than Kabir. How old is Saanvi? (a) 14 (b) 5 (c) not enough info (d) 13
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
10. 10.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
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
12. 12.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
13. 13.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 9 PM
14. 14.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 2 PM (d) 5 PM
15. 15.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
17. 17.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
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) no, check more (c) yes, it is certain (d) yes, mangoes match
19. 19.🧩 Meera is 9 years old. Vihaan is 4 years older than Meera. How old is Vihaan? (a) 4 (b) not enough info (c) 13 (d) 14
20. 20.🧩 Ishaan is 6 years old. Tara is older than Ishaan. How old is Tara? (a) 7 (b) 8 (c) not enough info (d) 11
21. 21.🧩 Aarav bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) not enough info (c) ₹30 (d) ₹35
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Tara is 10 years old. Vihaan is 8 years older than Tara. How old is Vihaan? (a) 8 (b) not enough info (c) 19 (d) 18
24. 24.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
26. 26.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
27. 27.🧩 A box has 5 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 35 (d) 42
28. 28.🧩 A box has 7 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 35 (d) 40
29. 29.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
30. 30.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
31. 31.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
32. 32.🧩 Aarav bought 4 kites and a water bottle for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹200 (c) not enough info (d) ₹196
33. 33.🧩 Vihaan is 8 years old. Ishaan is 9 years older than Vihaan. How old is Ishaan? (a) 9 (b) 17 (c) not enough info (d) 18
34. 34.🧩 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
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
36. 36.🧩 Kabir is 8 years old. Ananya is 2 years older than Kabir. How old is Ananya? (a) 2 (b) not enough info (c) 11 (d) 10
37. 37.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 6 PM
38. 38.🧩 Saanvi is 12 years old. Nisha is older than Saanvi. How old is Nisha? (a) 17 (b) not enough info (c) 13 (d) 14
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
40. 40.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM

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