Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 277 · 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.🧩 Vihaan is 12 years old. Meera is older than Vihaan. How old is Meera? (a) 13 (b) 17 (c) 14 (d) not enough info
2. 2.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
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
4. 4.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
5. 5.🧩 A box has 3 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 27 (b) 12 (c) 36 (d) not enough info
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.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
8. 8.🥭 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, mangoes match (c) yes, it is certain (d) no mango is sweet
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
10. 10.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) not enough info (b) 8 (c) 80 (d) 16
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
15. 15.🧩 Rohan bought 6 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹120 (d) ₹25
16. 16.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 5 PM
17. 17.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
19. 19.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
20. 20.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
21. 21.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 2 PM (d) 5 PM
22. 22.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
23. 23.🧩 Aarav is 7 years old. Ishaan is 3 years older than Aarav. How old is Ishaan? (a) not enough info (b) 11 (c) 10 (d) 3
24. 24.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
26. 26.🧩 A box has 7 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 63 (b) 16 (c) not enough info (d) 72
27. 27.🧩 Saanvi bought 3 markers and a water bottle for ₹160 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹157 (c) ₹160 (d) ₹53
28. 28.🧩 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
29. 29.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Saanvi bought 3 markers and a bag for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) not enough info (c) ₹117 (d) ₹40
31. 31.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
32. 32.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 24 (b) 20 (c) not enough info (d) 9
33. 33.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 5 PM (c) 7 PM (d) not enough info
34. 34.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
35. 35.🧩 Kabir bought 2 markers and a cap for ₹110 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹55 (c) ₹110 (d) ₹108
36. 36.🧩 Rohan bought 4 pens and a lunch box for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹250 (b) not enough info (c) ₹246 (d) ₹62
37. 37.🧩 A box has 8 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 13 (b) not enough info (c) 45 (d) 40
38. 38.🧩 Diya bought 5 kites and a lunch box for ₹360 in all. Each kite cost the same. What did one kite cost? (a) ₹72 (b) ₹360 (c) not enough info (d) ₹355
39. 39.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) 8 PM (d) not enough info
40. 40.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info

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