Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 492 · 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 asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 11 (b) 35 (c) 30 (d) not enough info
3. 3.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
6. 6.🥭 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) yes, it is certain (c) no, check more (d) no mango is sweet
7. 7.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
8. 8.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
12. 12.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
13. 13.🧩 Kabir bought 6 mangoes for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹300 (b) ₹55 (c) not enough info (d) ₹50
14. 14.🧩 Arjun is 7 years old. Ishaan is 9 years older than Arjun. How old is Ishaan? (a) 17 (b) 16 (c) not enough info (d) 9
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
16. 16.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 7 PM
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
18. 18.🧩 Arjun bought 4 markers and a cap for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹136 (b) ₹35 (c) not enough info (d) ₹140
19. 19.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 12 (b) not enough info (c) 36 (d) 27
20. 20.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 6 PM
21. 21.🧩 Kabir bought 2 balls for ₹30 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹30
22. 22.🧩 Arjun is 12 years old. Kabir is 6 years older than Arjun. How old is Kabir? (a) 6 (b) not enough info (c) 19 (d) 18
23. 23.🧩 Diya bought 4 balls for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹140 (b) not enough info (c) ₹35 (d) ₹40
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.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
26. 26.🧩 A box has 5 rows of apples, with 5 in each row. How many apples are in the box? (a) 25 (b) 10 (c) 30 (d) not enough info
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Kabir bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹100 (c) ₹25 (d) not enough info
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) True (b) False
30. 30.🧩 Kabir is 11 years old. Saanvi is older than Kabir. How old is Saanvi? (a) 12 (b) 16 (c) 13 (d) not enough info
31. 31.🧩 Nisha is 6 years old. Vihaan is 9 years older than Nisha. How old is Vihaan? (a) 9 (b) 15 (c) 16 (d) not enough info
32. 32.🐕 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
33. 33.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
34. 34.🧩 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
35. 35.🧩 Ishaan is 6 years old. Arjun is 6 years older than Ishaan. How old is Arjun? (a) 6 (b) not enough info (c) 13 (d) 12
36. 36.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 42 (c) 48 (d) 13
37. 37.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) 9 (b) 25 (c) not enough info (d) 20
38. 38.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 90 (c) 18 (d) not enough info
39. 39.🧩 A box has 8 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 15 (b) 63 (c) 56 (d) not enough info
40. 40.🧩 Nisha is 11 years old. Meera is older than Nisha. How old is Meera? (a) 16 (b) 12 (c) 13 (d) not enough info

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