Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 966 · 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? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
3. 3.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
4. 4.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
5. 5.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 3 PM (c) 6 PM (d) 7 PM
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
7. 7.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
8. 8.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
9. 9.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 4 PM (d) 7 PM
10. 10.🐕 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
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
13. 13.🧩 Rohan is 10 years old. Tara is older than Rohan. How old is Tara? (a) not enough info (b) 12 (c) 15 (d) 11
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
16. 16.🧩 Diya bought 5 kites and a lunch box for ₹100 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹100 (c) ₹95 (d) ₹20
17. 17.🧩 Saanvi is 11 years old. Kabir is 3 years older than Saanvi. How old is Kabir? (a) 3 (b) 14 (c) not enough info (d) 15
18. 18.🧩 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
19. 19.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
21. 21.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Aarav is 7 years old. Meera is older than Aarav. How old is Meera? (a) 8 (b) not enough info (c) 12 (d) 9
23. 23.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
24. 24.🧩 A box has 7 rows of oranges, with 8 in each row. How many oranges are in the box? (a) not enough info (b) 56 (c) 64 (d) 15
25. 25.🥭 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 mango is sweet (c) no, check more (d) yes, it is certain
26. 26.🧩 Arjun is 8 years old. Rohan is 8 years older than Arjun. How old is Rohan? (a) not enough info (b) 8 (c) 17 (d) 16
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
28. 28.🧩 Meera is 6 years old. Diya is older than Meera. How old is Diya? (a) 11 (b) 8 (c) not enough info (d) 7
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
30. 30.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
31. 31.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 36 (b) 12 (c) not enough info (d) 27
32. 32.🧩 Kabir is 8 years old. Diya is 8 years older than Kabir. How old is Diya? (a) 8 (b) not enough info (c) 16 (d) 17
33. 33.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
34. 34.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
35. 35.🧩 Ishaan bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) not enough info (c) ₹40 (d) ₹20
36. 36.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
37. 37.🧩 Diya is 6 years old. Arjun is older than Diya. How old is Arjun? (a) not enough info (b) 8 (c) 11 (d) 7
38. 38.🧩 Kabir bought 6 markers and a cap for ₹260 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹254 (c) ₹260 (d) ₹43
39. 39.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
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class

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