Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 226 · 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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
2. 2.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 17 (b) 81 (c) not enough info (d) 72
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
4. 4.🧩 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
5. 5.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) no, check more (d) yes, it is certain
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
7. 7.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
8. 8.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
9. 9.🧩 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
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
12. 12.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
13. 13.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
14. 14.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
17. 17.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
18. 18.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
20. 20.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
21. 21.🧩 Saanvi is 10 years old. Tara is older than Saanvi. How old is Tara? (a) 12 (b) 11 (c) 15 (d) not enough info
22. 22.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
23. 23.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Meera is 6 years old. Tara is 9 years older than Meera. How old is Tara? (a) 16 (b) not enough info (c) 15 (d) 9
27. 27.🧩 Aarav bought 4 kites for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹220 (b) not enough info (c) ₹60 (d) ₹55
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
29. 29.🧩 Tara bought 2 balls and a bag for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹108 (b) ₹110 (c) not enough info (d) ₹55
30. 30.🧩 Vihaan bought 5 notebooks for ₹225 in all. Each notebook cost the same. What did one notebook cost? (a) ₹225 (b) ₹45 (c) ₹50 (d) not enough info
31. 31.True or false: “My friend didn’t like the book, so the book is bad for everyone.” 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.🧩 Tara bought 2 markers and a water bottle for ₹90 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹45 (c) ₹88 (d) ₹90
34. 34.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 6 (b) 12 (c) not enough info (d) 60
35. 35.🧩 Aarav bought 3 balls and a bag for ₹135 in all. Each ball cost the same. What did one ball cost? (a) ₹132 (b) not enough info (c) ₹45 (d) ₹135
36. 36.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 6 PM
37. 37.🧩 Nisha bought 3 mangoes for ₹150 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹150 (c) ₹50 (d) ₹55
38. 38.🧩 A box has 6 rows of apples, with 9 in each row. How many apples are in the box? (a) not enough info (b) 15 (c) 63 (d) 54
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
40. 40.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion

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