Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 833 · 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? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
3. 3.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
4. 4.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
5. 5.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 9 PM
6. 6.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
7. 7.🧩 Tara bought 4 notebooks and a lunch box for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹96 (b) not enough info (c) ₹100 (d) ₹25
8. 8.🧩 Ananya bought 3 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹75 (b) not enough info (c) ₹25 (d) ₹30
9. 9.🧩 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
10. 10.🧩 Nisha bought 5 balls and a lunch box for ₹290 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹285 (c) ₹290 (d) ₹58
11. 11.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 4 PM (c) 8 PM (d) 7 PM
12. 12.🧩 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
13. 13.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
14. 14.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
15. 15.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 7 PM
16. 16.🧩 Rohan is 8 years old. Meera is 4 years older than Rohan. How old is Meera? (a) 13 (b) not enough info (c) 4 (d) 12
17. 17.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 8 PM (c) not enough info (d) 9 PM
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Ishaan bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹65 (c) ₹60 (d) ₹180
20. 20.🥭 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) yes, it is certain (d) no, check more
21. 21.🧩 Ananya bought 3 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹180 (d) ₹65
22. 22.🧩 Tara bought 2 pens and a bag for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹138 (b) ₹70 (c) not enough info (d) ₹140
23. 23.🧩 Saanvi is 9 years old. Diya is 7 years older than Saanvi. How old is Diya? (a) 16 (b) 7 (c) 17 (d) not enough info
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
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: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
28. 28.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
29. 29.🧩 Arjun bought 4 notebooks and a water bottle for ₹250 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹62 (c) ₹250 (d) ₹246
30. 30.🧩 Nisha bought 4 balls and a bag for ₹280 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹70 (c) ₹276 (d) ₹280
31. 31.🧩 Nisha bought 2 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹30
32. 32.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 7 PM (c) 6 PM (d) not enough info
33. 33.🧩 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
34. 34.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) not enough info (c) 10 (d) 5
35. 35.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 54 (b) 15 (c) not enough info (d) 63
36. 36.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) not enough info (d) 4 PM
37. 37.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
38. 38.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
40. 40.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 35 (b) 30 (c) not enough info (d) 11

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