Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 89 · 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.🧩 A box has 4 rows of apples, with 6 in each row. How many apples are in the box? (a) 30 (b) 10 (c) 24 (d) not enough info
2. 2.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
5. 5.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
7. 7.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
8. 8.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Rohan bought 3 pens for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹135 (b) ₹50 (c) ₹45 (d) not enough info
11. 11.🧩 Meera is 9 years old. Diya is older than Meera. How old is Diya? (a) 10 (b) 14 (c) not enough info (d) 11
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) no, check more (c) yes, mangoes match (d) yes, it is certain
13. 13.🧩 Saanvi is 6 years old. Aarav is older than Saanvi. How old is Aarav? (a) 11 (b) 8 (c) 7 (d) not enough info
14. 14.🧩 Aarav bought 6 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) not enough info (c) ₹120 (d) ₹20
15. 15.🧩 Diya is 12 years old. Kabir is 9 years older than Diya. How old is Kabir? (a) 22 (b) 21 (c) 9 (d) not enough info
16. 16.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 10 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.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Rohan is 6 years old. Meera is 4 years older than Rohan. How old is Meera? (a) 11 (b) not enough info (c) 4 (d) 10
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
20. 20.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
21. 21.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
23. 23.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 6 PM
24. 24.🧩 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
25. 25.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
26. 26.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
27. 27.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
28. 28.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
29. 29.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
30. 30.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
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.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
33. 33.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) not enough info (b) 6 (c) 60 (d) 12
34. 34.🧩 A box has 5 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 14 (b) 54 (c) 45 (d) not enough info
35. 35.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
36. 36.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
37. 37.🧩 Ananya is 9 years old. Nisha is 4 years older than Ananya. How old is Nisha? (a) 13 (b) 14 (c) not enough info (d) 4
38. 38.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) 56 (b) 14 (c) 48 (d) not enough info
39. 39.🧩 Ishaan bought 2 balls and a water bottle for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹110 (c) not enough info (d) ₹108
40. 40.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info

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