Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 325 · 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.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
2. 2.📊 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
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.🧩 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
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
6. 6.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 4 PM (c) 7 PM (d) not enough info
7. 7.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
9. 9.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
10. 10.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
12. 12.🧩 Meera is 10 years old. Diya is older than Meera. How old is Diya? (a) 11 (b) 15 (c) 12 (d) not enough info
13. 13.🧩 A box has 8 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 32 (b) 12 (c) not enough info (d) 36
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Arjun bought 2 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹30 (c) not enough info (d) ₹15
16. 16.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
17. 17.🧩 A box has 5 rows of apples, with 7 in each row. How many apples are in the box? (a) 12 (b) 42 (c) 35 (d) not enough info
18. 18.🧩 A box has 5 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 14 (b) not enough info (c) 54 (d) 45
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
20. 20.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 5 PM
21. 21.🥭 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, it is certain (c) no mango is sweet (d) yes, mangoes match
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
23. 23.🧩 A box has 5 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 45 (b) 14 (c) not enough info (d) 54
24. 24.🧩 Nisha is 7 years old. Aarav is older than Nisha. How old is Aarav? (a) not enough info (b) 8 (c) 9 (d) 12
25. 25.🧩 A box has 5 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 12 (b) 42 (c) not enough info (d) 35
26. 26.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
27. 27.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 5 PM (d) 9 PM
28. 28.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
29. 29.🧩 Diya is 10 years old. Rohan is older than Diya. How old is Rohan? (a) 11 (b) 12 (c) not enough info (d) 15
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
31. 31.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) not enough info (c) 5 (d) 50
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
33. 33.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
35. 35.🧩 Tara bought 3 mangoes for ₹105 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹105
36. 36.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
37. 37.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
38. 38.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 3 PM
39. 39.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 9 PM (d) 8 PM
40. 40.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False

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