Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 369 · 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.🧩 Arjun bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) not enough info (c) ₹65 (d) ₹60
2. 2.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 13 (b) 48 (c) 42 (d) not enough info
3. 3.🧩 Diya bought 6 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹180 (c) not enough info (d) ₹35
4. 4.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
5. 5.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
6. 6.🧩 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
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.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Ishaan bought 4 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) ₹45 (c) not enough info (d) ₹50
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
12. 12.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) the colour of ink (d) your handwriting
13. 13.🥭 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 mango is sweet (d) no, check more
14. 14.📊 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
15. 15.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
17. 17.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
20. 20.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
22. 22.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
23. 23.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
24. 24.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
25. 25.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
26. 26.🧩 Aarav bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹60 (d) ₹15
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
28. 28.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 45 (b) 36 (c) not enough info (d) 13
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Tara is 8 years old. Meera is 2 years older than Tara. How old is Meera? (a) 11 (b) 2 (c) not enough info (d) 10
31. 31.🧩 Saanvi bought 2 kites and a bag for ₹170 in all. Each kite cost the same. What did one kite cost? (a) ₹170 (b) ₹85 (c) ₹168 (d) not enough info
32. 32.🧩 A box has 5 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 13 (b) 40 (c) 48 (d) not enough info
33. 33.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) not enough info (c) 10 (d) 5
34. 34.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
35. 35.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 8 PM (d) 7 PM
36. 36.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
37. 37.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
38. 38.🧩 Tara is 12 years old. Aarav is 7 years older than Tara. How old is Aarav? (a) 20 (b) 7 (c) not enough info (d) 19
39. 39.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 8 PM (d) 7 PM
40. 40.🧩 Ananya bought 2 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹30 (c) not enough info (d) ₹25

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