Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 317 · 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.🧩 Diya is 12 years old. Ananya is 5 years older than Diya. How old is Ananya? (a) 5 (b) not enough info (c) 18 (d) 17
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
3. 3.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
4. 4.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
9. 9.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
12. 12.🧩 Diya is 10 years old. Kabir is older than Diya. How old is Kabir? (a) 12 (b) 15 (c) not enough info (d) 11
13. 13.🧩 Vihaan is 7 years old. Kabir is 4 years older than Vihaan. How old is Kabir? (a) 4 (b) not enough info (c) 11 (d) 12
14. 14.🧩 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
15. 15.🧩 A box has 7 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 13 (b) 48 (c) not enough info (d) 42
16. 16.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 5 PM (c) 9 PM (d) not enough info
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
18. 18.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) yes, mangoes match (d) no mango is sweet
19. 19.🧩 Rohan is 6 years old. Ananya is 5 years older than Rohan. How old is Ananya? (a) 5 (b) not enough info (c) 11 (d) 12
20. 20.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 6 PM
21. 21.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
22. 22.🧩 Ananya bought 4 balls and a lunch box for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹67 (b) ₹266 (c) ₹270 (d) not enough info
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
24. 24.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 56 (b) not enough info (c) 14 (d) 49
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
28. 28.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 3 PM (c) 6 PM (d) not enough info
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Ananya bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹40 (c) not enough info (d) ₹25
31. 31.🧩 Saanvi is 9 years old. Rohan is 2 years older than Saanvi. How old is Rohan? (a) not enough info (b) 11 (c) 2 (d) 12
32. 32.🧩 Saanvi is 9 years old. Vihaan is 9 years older than Saanvi. How old is Vihaan? (a) not enough info (b) 19 (c) 18 (d) 9
33. 33.🧩 A box has 5 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 30 (c) 25 (d) 10
34. 34.🧩 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
35. 35.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
36. 36.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
37. 37.🧩 Meera bought 2 notebooks and a cap for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹198 (b) ₹200 (c) ₹100 (d) not enough info
38. 38.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
39. 39.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 9 PM
40. 40.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence

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