Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 307 · 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) not enough evidence (b) enough evidence
2. 2.🧩 Nisha is 7 years old. Tara is 2 years older than Nisha. How old is Tara? (a) 9 (b) 10 (c) 2 (d) not enough info
3. 3.🧩 Nisha is 11 years old. Ananya is 9 years older than Nisha. How old is Ananya? (a) not enough info (b) 20 (c) 21 (d) 9
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 3 PM
6. 6.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
7. 7.🧩 Arjun is 10 years old. Diya is older than Arjun. How old is Diya? (a) 15 (b) not enough info (c) 12 (d) 11
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
9. 9.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
10. 10.🧩 Saanvi is 7 years old. Ananya is older than Saanvi. How old is Ananya? (a) not enough info (b) 9 (c) 12 (d) 8
11. 11.🧩 Tara bought 5 balls and a cap for ₹315 in all. Each ball cost the same. What did one ball cost? (a) ₹315 (b) ₹310 (c) not enough info (d) ₹63
12. 12.🥭 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 mango is sweet (c) yes, mangoes match (d) no, check more
13. 13.🐕 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
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
15. 15.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
16. 16.🧩 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
17. 17.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
18. 18.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
20. 20.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Kabir is 6 years old. Diya is 2 years older than Kabir. How old is Diya? (a) not enough info (b) 8 (c) 2 (d) 9
24. 24.🧩 Meera bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹40 (d) ₹10
25. 25.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
26. 26.🧩 Aarav bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹240 (c) not enough info (d) ₹40
27. 27.🧩 Meera is 6 years old. Rohan is 5 years older than Meera. How old is Rohan? (a) not enough info (b) 5 (c) 12 (d) 11
28. 28.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
30. 30.🧩 Aarav bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹250
31. 31.🧩 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
32. 32.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
33. 33.🧩 Kabir is 11 years old. Ananya is older than Kabir. How old is Ananya? (a) 16 (b) not enough info (c) 12 (d) 13
34. 34.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
35. 35.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
36. 36.🧩 Tara bought 2 balls and a lunch box for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹80 (b) not enough info (c) ₹160 (d) ₹158
37. 37.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) 6 PM (d) not enough info
38. 38.🧩 Vihaan is 12 years old. Meera is older than Vihaan. How old is Meera? (a) not enough info (b) 17 (c) 14 (d) 13
39. 39.🧩 Nisha bought 2 kites and a bag for ₹170 in all. Each kite cost the same. What did one kite cost? (a) ₹85 (b) not enough info (c) ₹170 (d) ₹168
40. 40.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM

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