Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 321 · 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 asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
4. 4.🧩 Aarav bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) ₹50 (c) not enough info (d) ₹55
5. 5.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
7. 7.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
8. 8.🧩 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
9. 9.🧩 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
10. 10.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
11. 11.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
12. 12.🥭 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) yes, it is certain (c) yes, mangoes match (d) no, check more
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
14. 14.🧩 Aarav is 11 years old. Saanvi is older than Aarav. How old is Saanvi? (a) not enough info (b) 16 (c) 13 (d) 12
15. 15.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
16. 16.🧩 Meera is 7 years old. Ananya is 7 years older than Meera. How old is Ananya? (a) 14 (b) 7 (c) 15 (d) not enough info
17. 17.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
18. 18.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
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.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
21. 21.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) not enough info (b) 42 (c) 49 (d) 13
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Rohan bought 6 kites and a bag for ₹280 in all. Each kite cost the same. What did one kite cost? (a) ₹46 (b) ₹280 (c) not enough info (d) ₹274
24. 24.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
25. 25.🧩 Rohan is 12 years old. Nisha is older than Rohan. How old is Nisha? (a) 13 (b) 14 (c) 17 (d) not enough info
26. 26.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 5 PM
27. 27.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 5 PM
28. 28.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Diya bought 5 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) ₹20 (c) not enough info (d) ₹15
30. 30.🧩 Diya is 9 years old. Kabir is older than Diya. How old is Kabir? (a) not enough info (b) 14 (c) 10 (d) 11
31. 31.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
32. 32.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 4 PM
33. 33.🧩 Diya bought 6 balls and a lunch box for ₹170 in all. Each ball cost the same. What did one ball cost? (a) ₹164 (b) ₹28 (c) ₹170 (d) not enough info
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
35. 35.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
37. 37.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
38. 38.🧩 A box has 4 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 40 (c) 12 (d) 32
39. 39.🧩 Meera bought 3 kites and a water bottle for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹162 (b) ₹165 (c) not enough info (d) ₹55
40. 40.🧩 Nisha bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹30 (d) ₹50

Free critical thinking lessons, practice and worksheets at talentjr.in/critical-thinking-for-kids