Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 262 · 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.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
2. 2.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 35 (c) 11 (d) 30
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
5. 5.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
6. 6.🧩 Ishaan bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹30 (c) ₹25 (d) not enough info
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
9. 9.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
10. 10.🧩 Vihaan bought 3 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) not enough info (c) ₹15 (d) ₹30
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
12. 12.🥭 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) yes, mangoes match (d) no mango is sweet
13. 13.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
14. 14.🧩 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
15. 15.🧩 Kabir bought 5 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹100 (c) ₹25 (d) ₹20
16. 16.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
17. 17.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 6 PM
18. 18.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
19. 19.🧩 Aarav is 7 years old. Saanvi is older than Aarav. How old is Saanvi? (a) not enough info (b) 9 (c) 8 (d) 12
20. 20.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) 6 PM (d) not enough info
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
22. 22.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
24. 24.True or false: “One mango in the box was sour, so all the mangoes are sour.” 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.🧩 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
27. 27.🧩 Aarav is 8 years old. Tara is older than Aarav. How old is Tara? (a) 10 (b) 13 (c) 9 (d) not enough info
28. 28.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
29. 29.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
30. 30.🧩 Tara is 7 years old. Ananya is older than Tara. How old is Ananya? (a) 9 (b) 12 (c) 8 (d) not enough info
31. 31.🧩 Meera bought 4 pens and a water bottle for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹206 (b) ₹52 (c) not enough info (d) ₹210
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Tara bought 3 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) ₹30 (c) not enough info (d) ₹35
34. 34.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) 3 PM (d) not enough info
35. 35.🧩 Aarav bought 4 balls and a bag for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹110 (b) ₹106 (c) not enough info (d) ₹27
36. 36.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 20 (b) not enough info (c) 25 (d) 9
37. 37.🧩 Kabir is 7 years old. Rohan is 3 years older than Kabir. How old is Rohan? (a) 11 (b) not enough info (c) 3 (d) 10
38. 38.🧩 Vihaan bought 4 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹100 (d) ₹25
39. 39.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
40. 40.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 9 PM

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