Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 434 · 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 has 4 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 40 (b) not enough info (c) 32 (d) 12
2. 2.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 5 PM (c) 7 PM (d) not enough info
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
5. 5.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
7. 7.🧩 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
8. 8.🧩 A box has 3 rows of apples, with 9 in each row. How many apples are in the box? (a) 36 (b) not enough info (c) 12 (d) 27
9. 9.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
11. 11.🧩 Ishaan bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) not enough info (c) ₹20 (d) ₹25
12. 12.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 18 (b) not enough info (c) 24 (d) 9
13. 13.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
15. 15.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
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
17. 17.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
18. 18.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
19. 19.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
20. 20.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
21. 21.🥭 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
22. 22.🧩 Vihaan is 6 years old. Meera is older than Vihaan. How old is Meera? (a) 11 (b) not enough info (c) 8 (d) 7
23. 23.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
24. 24.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
25. 25.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 6 PM (d) 5 PM
26. 26.🧩 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
27. 27.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 9 (c) 24 (d) 20
28. 28.🧩 Meera is 12 years old. Ananya is older than Meera. How old is Ananya? (a) 17 (b) 13 (c) 14 (d) not enough info
29. 29.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Aarav bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹75
32. 32.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
33. 33.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
34. 34.🧩 Saanvi bought 6 balls for ₹360 in all. Each ball cost the same. What did one ball cost? (a) ₹360 (b) not enough info (c) ₹60 (d) ₹65
35. 35.🧩 Tara is 12 years old. Aarav is older than Tara. How old is Aarav? (a) 13 (b) 17 (c) 14 (d) not enough info
36. 36.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
37. 37.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
39. 39.🧩 Diya is 8 years old. Kabir is 3 years older than Diya. How old is Kabir? (a) 12 (b) not enough info (c) 11 (d) 3
40. 40.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence

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