Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 626 · 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 tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
2. 2.🧩 Ishaan is 9 years old. Kabir is older than Ishaan. How old is Kabir? (a) not enough info (b) 14 (c) 10 (d) 11
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
4. 4.🧩 Diya bought 5 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹150 (b) ₹30 (c) not enough info (d) ₹35
5. 5.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
6. 6.🧩 Ishaan bought 3 notebooks and a bag for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹207 (c) ₹70 (d) ₹210
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
8. 8.🧩 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
9. 9.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
10. 10.🧩 Kabir is 9 years old. Ishaan is 9 years older than Kabir. How old is Ishaan? (a) not enough info (b) 18 (c) 9 (d) 19
11. 11.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
12. 12.🥭 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) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
13. 13.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
14. 14.🧩 Tara bought 5 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) ₹40 (c) ₹45 (d) not enough info
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
16. 16.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
17. 17.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
19. 19.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
21. 21.📊 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
22. 22.🧩 Diya bought 5 kites and a water bottle for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹75 (b) ₹80 (c) ₹16 (d) not enough info
23. 23.🧩 Tara is 7 years old. Aarav is older than Tara. How old is Aarav? (a) not enough info (b) 9 (c) 8 (d) 12
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
25. 25.🧩 Saanvi is 8 years old. Ananya is 6 years older than Saanvi. How old is Ananya? (a) 15 (b) 6 (c) 14 (d) not enough info
26. 26.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) 7 PM (d) not enough info
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
28. 28.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) 60 (c) not enough info (d) 6
29. 29.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Nisha bought 2 notebooks and a water bottle for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) not enough info (c) ₹180 (d) ₹178
34. 34.🧩 Meera is 10 years old. Saanvi is older than Meera. How old is Saanvi? (a) 11 (b) 12 (c) not enough info (d) 15
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
36. 36.🧩 Vihaan is 8 years old. Kabir is 3 years older than Vihaan. How old is Kabir? (a) 3 (b) 12 (c) not enough info (d) 11
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
40. 40.🧩 Aarav bought 4 kites for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹220 (b) ₹55 (c) not enough info (d) ₹60

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