Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 543 · 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 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 2 PM
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
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.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
6. 6.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 30 (c) 10 (d) 25
7. 7.🧩 Ananya bought 2 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹30 (c) ₹15 (d) not enough info
8. 8.🧩 Kabir is 6 years old. Nisha is 9 years older than Kabir. How old is Nisha? (a) 9 (b) 15 (c) not enough info (d) 16
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
10. 10.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 9 (b) 24 (c) 20 (d) not enough info
11. 11.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
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Kabir is 10 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 12 (b) 11 (c) 15 (d) not enough info
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
16. 16.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 7 PM
17. 17.🧩 Ananya is 8 years old. Nisha is 8 years older than Ananya. How old is Nisha? (a) 17 (b) 16 (c) not enough info (d) 8
18. 18.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) no mango is sweet (d) yes, it is certain
19. 19.🧩 Ishaan is 11 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 12 (b) 13 (c) 16 (d) not enough info
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
21. 21.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
22. 22.🧩 Kabir bought 6 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹150
23. 23.🧩 Meera is 10 years old. Tara is 8 years older than Meera. How old is Tara? (a) 8 (b) not enough info (c) 18 (d) 19
24. 24.🧩 A box has 8 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 63 (b) not enough info (c) 56 (d) 15
25. 25.🧩 Diya is 8 years old. Nisha is 8 years older than Diya. How old is Nisha? (a) 16 (b) 17 (c) 8 (d) not enough info
26. 26.🧩 A box has 5 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 30 (c) 25 (d) 10
27. 27.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
28. 28.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
29. 29.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
30. 30.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
31. 31.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
32. 32.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Diya is 7 years old. Meera is older than Diya. How old is Meera? (a) 12 (b) 9 (c) 8 (d) not enough info
35. 35.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 24 (b) 9 (c) 20 (d) not enough info
36. 36.🧩 Ananya bought 4 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹120 (b) ₹35 (c) not enough info (d) ₹30
37. 37.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
38. 38.🧩 Vihaan is 8 years old. Ananya is 4 years older than Vihaan. How old is Ananya? (a) not enough info (b) 12 (c) 4 (d) 13
39. 39.🧩 A box has 7 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 12 (c) 40 (d) 35
40. 40.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False

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