Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 508 · 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.🥭 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
2. 2.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
3. 3.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
4. 4.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) 3 PM (d) not enough info
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
7. 7.🧩 A box has 6 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 54 (c) 63 (d) 15
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
9. 9.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
10. 10.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
11. 11.🧩 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
12. 12.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
13. 13.🧩 Nisha bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹45 (d) ₹240
14. 14.🧩 Vihaan is 11 years old. Ananya is 8 years older than Vihaan. How old is Ananya? (a) not enough info (b) 20 (c) 19 (d) 8
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Kabir bought 4 mangoes for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹160 (b) ₹40 (c) not enough info (d) ₹45
18. 18.🧩 Tara is 7 years old. Nisha is 2 years older than Tara. How old is Nisha? (a) 2 (b) 10 (c) 9 (d) not enough info
19. 19.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
20. 20.🧩 A box has 6 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 12 (c) 42 (d) 36
21. 21.🧩 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
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Aarav bought 6 balls and a cap for ₹190 in all. Each ball cost the same. What did one ball cost? (a) ₹184 (b) ₹190 (c) not enough info (d) ₹31
24. 24.🧩 Vihaan is 7 years old. Meera is 6 years older than Vihaan. How old is Meera? (a) not enough info (b) 14 (c) 13 (d) 6
25. 25.🧩 Diya bought 4 notebooks and a lunch box for ₹280 in all. Each notebook cost the same. What did one notebook cost? (a) ₹70 (b) not enough info (c) ₹276 (d) ₹280
26. 26.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
28. 28.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
29. 29.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
30. 30.🧩 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
31. 31.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 9 (b) 20 (c) 24 (d) not enough info
32. 32.🧩 Aarav bought 6 balls for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹270 (b) ₹50 (c) not enough info (d) ₹45
33. 33.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) 40 (c) not enough info (d) 12
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
35. 35.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
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: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
38. 38.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
39. 39.🧩 Saanvi is 6 years old. Rohan is older than Saanvi. How old is Rohan? (a) not enough info (b) 8 (c) 11 (d) 7
40. 40.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 8 PM (c) 5 PM (d) not enough info

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