Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 46 · 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? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
3. 3.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
4. 4.🧩 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
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
6. 6.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
9. 9.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 4 (c) not enough info (d) 40
10. 10.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
11. 11.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 48 (c) 13 (d) 42
12. 12.🧩 Tara is 8 years old. Meera is 5 years older than Tara. How old is Meera? (a) 14 (b) not enough info (c) 5 (d) 13
13. 13.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 16 (b) 20 (c) not enough info (d) 8
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
15. 15.🧩 Kabir bought 2 markers and a bag for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹140 (b) not enough info (c) ₹138 (d) ₹70
16. 16.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 72 (c) 81 (d) 17
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
18. 18.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
19. 19.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
20. 20.🧩 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
21. 21.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
23. 23.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
24. 24.🧩 Vihaan is 7 years old. Diya is 4 years older than Vihaan. How old is Diya? (a) 12 (b) not enough info (c) 11 (d) 4
25. 25.🧩 A box has 3 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 20 (b) not enough info (c) 8 (d) 15
26. 26.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
28. 28.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
29. 29.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
32. 32.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) 14 (b) not enough info (c) 54 (d) 48
33. 33.🧩 Nisha bought 3 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹25 (d) ₹75
34. 34.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
35. 35.🧩 Saanvi bought 5 balls and a cap for ₹320 in all. Each ball cost the same. What did one ball cost? (a) ₹315 (b) not enough info (c) ₹320 (d) ₹64
36. 36.🧩 A box has 6 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 49 (c) 13 (d) 42
37. 37.🧩 A box has 6 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 14 (c) 48 (d) 56
38. 38.🧩 Tara is 12 years old. Ananya is 9 years older than Tara. How old is Ananya? (a) not enough info (b) 21 (c) 22 (d) 9
39. 39.🧩 Kabir bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹75 (c) ₹25 (d) ₹30
40. 40.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

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