Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 344 · 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 tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Tara is 12 years old. Vihaan is older than Tara. How old is Vihaan? (a) 17 (b) 14 (c) 13 (d) not enough info
3. 3.🧩 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
4. 4.🧩 Ananya is 10 years old. Saanvi is 4 years older than Ananya. How old is Saanvi? (a) 15 (b) not enough info (c) 14 (d) 4
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
6. 6.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
7. 7.🧩 Nisha bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) not enough info (c) ₹275 (d) ₹60
8. 8.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Diya bought 2 kites and a lunch box for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) ₹90 (c) not enough info (d) ₹178
10. 10.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, mangoes match (d) yes, it is certain
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
15. 15.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
16. 16.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
17. 17.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 2 PM
18. 18.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 9 PM (c) 8 PM (d) 7 PM
19. 19.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
20. 20.🧩 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
21. 21.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
22. 22.🧩 Nisha bought 4 markers and a bag for ₹230 in all. Each marker cost the same. What did one marker cost? (a) ₹230 (b) ₹226 (c) ₹57 (d) not enough info
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
24. 24.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
26. 26.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 6 PM (c) 5 PM (d) not enough info
28. 28.🧩 Diya bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹180 (d) ₹35
29. 29.🧩 Arjun bought 5 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹50
30. 30.🧩 Nisha bought 3 mangoes and a cap for ₹110 in all. Each mango cost the same. What did one mango cost? (a) ₹110 (b) not enough info (c) ₹107 (d) ₹36
31. 31.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
32. 32.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
34. 34.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
35. 35.🧩 Diya bought 5 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹10 (c) ₹15 (d) ₹50
36. 36.🧩 Tara is 9 years old. Rohan is 5 years older than Tara. How old is Rohan? (a) 15 (b) not enough info (c) 5 (d) 14
37. 37.🧩 Kabir is 11 years old. Nisha is older than Kabir. How old is Nisha? (a) 16 (b) 12 (c) 13 (d) not enough info
38. 38.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) 48 (b) 14 (c) 54 (d) not enough info
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
40. 40.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False

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