Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 816 · 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 tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
2. 2.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Aarav bought 5 notebooks and a cap for ₹245 in all. Each notebook cost the same. What did one notebook cost? (a) ₹245 (b) not enough info (c) ₹49 (d) ₹240
5. 5.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
6. 6.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
7. 7.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) 36 (b) 42 (c) not enough info (d) 12
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
9. 9.🧩 Tara is 6 years old. Meera is older than Tara. How old is Meera? (a) 11 (b) 8 (c) 7 (d) not enough info
10. 10.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
12. 12.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
14. 14.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
15. 15.🧩 Vihaan bought 4 balls and a water bottle for ₹260 in all. Each ball cost the same. What did one ball cost? (a) ₹260 (b) ₹256 (c) ₹65 (d) not enough info
16. 16.🧩 Saanvi is 9 years old. Ananya is 4 years older than Saanvi. How old is Ananya? (a) 4 (b) 14 (c) not enough info (d) 13
17. 17.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 72 (b) 16 (c) 63 (d) not enough info
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
20. 20.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
21. 21.🧩 Ananya is 8 years old. Rohan is older than Ananya. How old is Rohan? (a) not enough info (b) 10 (c) 13 (d) 9
22. 22.🧩 Tara is 8 years old. Meera is 8 years older than Tara. How old is Meera? (a) 16 (b) 17 (c) 8 (d) not enough info
23. 23.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 5 PM (d) 8 PM
24. 24.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
26. 26.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
28. 28.🧩 A box has 5 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 25 (c) not enough info (d) 10
29. 29.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) yes, mangoes match (d) no mango is sweet
30. 30.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
31. 31.🧩 Aarav is 8 years old. Meera is older than Aarav. How old is Meera? (a) 10 (b) 9 (c) not enough info (d) 13
32. 32.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) 6 PM (d) not enough info
33. 33.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
34. 34.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
36. 36.🧩 Rohan bought 6 notebooks and a bag for ₹400 in all. Each notebook cost the same. What did one notebook cost? (a) ₹66 (b) ₹400 (c) ₹394 (d) not enough info
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
38. 38.🧩 Diya bought 5 markers and a bag for ₹215 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹43 (c) ₹210 (d) ₹215
39. 39.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
40. 40.🧩 Arjun bought 4 kites and a water bottle for ₹250 in all. Each kite cost the same. What did one kite cost? (a) ₹62 (b) ₹246 (c) ₹250 (d) not enough info

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