Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 437 · 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.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
2. 2.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
5. 5.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
8. 8.🥭 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) yes, it is certain (d) no, check more
9. 9.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) not enough info (c) 14 (d) 56
10. 10.🧩 Saanvi bought 6 mangoes and a bag for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹20 (c) ₹114 (d) ₹120
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
12. 12.🧩 A box has 5 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 11 (b) 30 (c) not enough info (d) 36
13. 13.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
14. 14.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
15. 15.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
16. 16.🧩 Tara bought 4 notebooks and a bag for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹130 (b) not enough info (c) ₹126 (d) ₹32
17. 17.🧩 Meera is 8 years old. Aarav is 6 years older than Meera. How old is Aarav? (a) 6 (b) not enough info (c) 14 (d) 15
18. 18.🧩 Nisha bought 5 balls and a bag for ₹125 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹125 (c) ₹120 (d) not enough info
19. 19.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
21. 21.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
22. 22.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
23. 23.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
24. 24.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
25. 25.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
26. 26.🧩 Meera is 10 years old. Vihaan is 3 years older than Meera. How old is Vihaan? (a) 14 (b) 3 (c) not enough info (d) 13
27. 27.🧩 Kabir is 7 years old. Nisha is older than Kabir. How old is Nisha? (a) 9 (b) 8 (c) 12 (d) not enough info
28. 28.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 11 (b) 30 (c) not enough info (d) 36
29. 29.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Diya bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) not enough info (c) ₹25 (d) ₹20
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
32. 32.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 20 (b) 8 (c) not enough info (d) 15
33. 33.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
34. 34.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 20 (b) 16 (c) 8 (d) not enough info
35. 35.🧩 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
36. 36.🧩 Tara bought 6 balls and a cap for ₹330 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹324 (c) ₹55 (d) ₹330
37. 37.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
38. 38.🧩 Saanvi is 7 years old. Aarav is older than Saanvi. How old is Aarav? (a) 9 (b) 12 (c) not enough info (d) 8
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
40. 40.🧩 Tara is 6 years old. Vihaan is 2 years older than Tara. How old is Vihaan? (a) 9 (b) not enough info (c) 8 (d) 2

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