Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 267 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
2. 2.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM
3. 3.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
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
5. 5.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
6. 6.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
7. 7.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
8. 8.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
9. 9.🧩 Meera is 7 years old. Ishaan is older than Meera. How old is Ishaan? (a) 8 (b) 12 (c) not enough info (d) 9
10. 10.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
11. 11.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
12. 12.🧩 Meera bought 4 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹200 (c) ₹55 (d) ₹50
13. 13.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
14. 14.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 8 PM
15. 15.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
16. 16.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
17. 17.🥭 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) yes, it is certain (d) no mango is sweet
18. 18.🧩 Ananya bought 4 mangoes and a lunch box for ₹220 in all. Each mango cost the same. What did one mango cost? (a) ₹216 (b) ₹55 (c) not enough info (d) ₹220
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
20. 20.🧩 Diya bought 5 kites and a water bottle for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹165 (b) ₹33 (c) ₹160 (d) not enough info
21. 21.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
22. 22.🧩 Vihaan bought 5 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹50 (c) ₹10 (d) not enough info
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Ishaan is 8 years old. Rohan is older than Ishaan. How old is Rohan? (a) 13 (b) not enough info (c) 9 (d) 10
25. 25.🧩 Saanvi bought 2 pens and a cap for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹110 (c) ₹108 (d) not enough info
26. 26.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
28. 28.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 7 PM (c) 8 PM (d) not enough info
29. 29.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
30. 30.🧩 Ishaan bought 2 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹65 (b) ₹60 (c) ₹120 (d) not enough info
31. 31.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
32. 32.🧩 Arjun is 6 years old. Kabir is 3 years older than Arjun. How old is Kabir? (a) 3 (b) 10 (c) not enough info (d) 9
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Kabir bought 2 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹35 (d) ₹30
35. 35.🧩 Nisha bought 4 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹180 (c) not enough info (d) ₹45
36. 36.🧩 Arjun bought 4 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹50 (c) ₹200 (d) not enough info
37. 37.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
38. 38.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Meera bought 6 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹120 (c) ₹25 (d) not enough info
40. 40.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM

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