Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 162 · 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.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 12 (b) not enough info (c) 35 (d) 40
2. 2.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 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.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
5. 5.🧩 Diya bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹55 (c) ₹50 (d) ₹250
6. 6.🧩 Diya bought 4 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹100 (c) ₹25 (d) not enough info
7. 7.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Arjun is 11 years old. Ishaan is 5 years older than Arjun. How old is Ishaan? (a) not enough info (b) 5 (c) 17 (d) 16
11. 11.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
12. 12.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
13. 13.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
16. 16.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
17. 17.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
18. 18.🧩 Ishaan is 10 years old. Arjun is older than Ishaan. How old is Arjun? (a) 11 (b) 15 (c) not enough info (d) 12
19. 19.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) 4 (c) not enough info (d) 40
20. 20.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
21. 21.🧩 Arjun bought 3 notebooks and a bag for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹46 (c) ₹140 (d) ₹137
22. 22.🧩 Kabir is 11 years old. Saanvi is 3 years older than Kabir. How old is Saanvi? (a) 3 (b) 14 (c) not enough info (d) 15
23. 23.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
24. 24.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
25. 25.🧩 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
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
27. 27.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
28. 28.🥭 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) no mango is sweet (d) yes, mangoes match
29. 29.🧩 Arjun is 11 years old. Tara is older than Arjun. How old is Tara? (a) 13 (b) 12 (c) 16 (d) not enough info
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Rohan is 11 years old. Diya is older than Rohan. How old is Diya? (a) 12 (b) 16 (c) not enough info (d) 13
32. 32.🧩 Meera bought 5 notebooks and a water bottle for ₹155 in all. Each notebook cost the same. What did one notebook cost? (a) ₹31 (b) ₹155 (c) ₹150 (d) not enough info
33. 33.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 4 PM (c) 7 PM (d) not enough info
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
36. 36.🧩 A box has 7 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 28 (b) 32 (c) 11 (d) not enough info
37. 37.📊 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
38. 38.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
39. 39.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
40. 40.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) 13 (b) 45 (c) 40 (d) not enough info

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