Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 76 · 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: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
2. 2.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
4. 4.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
6. 6.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Kabir is 7 years old. Vihaan is 9 years older than Kabir. How old is Vihaan? (a) 17 (b) not enough info (c) 16 (d) 9
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
10. 10.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
11. 11.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 5 PM
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
13. 13.🧩 Ishaan bought 5 pens and a lunch box for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹110 (b) ₹22 (c) ₹105 (d) not enough info
14. 14.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
15. 15.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 3 PM (c) 5 PM (d) not enough info
16. 16.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
17. 17.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
18. 18.🧩 A box has 6 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 10 (c) 24 (d) 28
19. 19.🧩 Arjun bought 3 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹30
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
21. 21.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 13 (b) 40 (c) 48 (d) not enough info
22. 22.🧩 Tara bought 3 mangoes and a lunch box for ₹145 in all. Each mango cost the same. What did one mango cost? (a) ₹142 (b) ₹145 (c) not enough info (d) ₹48
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
24. 24.🧩 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
25. 25.🧩 Diya is 6 years old. Tara is older than Diya. How old is Tara? (a) 8 (b) 11 (c) 7 (d) not enough info
26. 26.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
28. 28.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 28 (c) 10 (d) 21
29. 29.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
30. 30.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
33. 33.🧩 Meera is 7 years old. Arjun is older than Meera. How old is Arjun? (a) 12 (b) 9 (c) not enough info (d) 8
34. 34.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
35. 35.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
36. 36.🧩 Ananya bought 2 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹90 (c) ₹45 (d) ₹50
37. 37.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
38. 38.🧩 Ishaan bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) ₹45 (c) not enough info (d) ₹40
39. 39.🧩 Meera is 11 years old. Aarav is older than Meera. How old is Aarav? (a) 12 (b) 16 (c) 13 (d) not enough info
40. 40.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 6 (d) 60

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