Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 426 · 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.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
2. 2.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
3. 3.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
4. 4.🧩 Diya is 9 years old. Saanvi is older than Diya. How old is Saanvi? (a) 11 (b) not enough info (c) 14 (d) 10
5. 5.🧩 Aarav bought 2 balls and a lunch box for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹128 (b) ₹65 (c) ₹130 (d) not enough info
6. 6.🧩 Saanvi is 10 years old. Vihaan is older than Saanvi. How old is Vihaan? (a) 15 (b) 12 (c) not enough info (d) 11
7. 7.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 4 PM
8. 8.🧩 Nisha bought 5 kites and a bag for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹150 (b) ₹30 (c) ₹145 (d) not enough info
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Aarav bought 3 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹65 (c) ₹180 (d) not enough info
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
12. 12.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 8 PM
13. 13.🧩 Meera is 9 years old. Ananya is 6 years older than Meera. How old is Ananya? (a) 16 (b) not enough info (c) 6 (d) 15
14. 14.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 2 PM
15. 15.🥭 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, it is certain (c) no mango is sweet (d) yes, mangoes match
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
18. 18.🧩 Kabir is 6 years old. Diya is older than Kabir. How old is Diya? (a) 8 (b) 11 (c) 7 (d) not enough info
19. 19.🧩 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
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
21. 21.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
22. 22.🧩 Ishaan bought 5 balls and a cap for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹235 (b) ₹48 (c) ₹240 (d) not enough info
23. 23.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
24. 24.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
25. 25.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
26. 26.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 9 (b) 24 (c) 18 (d) not enough info
27. 27.🧩 Tara bought 2 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹100 (b) ₹55 (c) ₹50 (d) not enough info
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
29. 29.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
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Ananya is 8 years old. Saanvi is older than Ananya. How old is Saanvi? (a) not enough info (b) 9 (c) 13 (d) 10
32. 32.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
34. 34.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
35. 35.🧩 Diya bought 3 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) ₹75 (b) not enough info (c) ₹30 (d) ₹25
36. 36.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
37. 37.🧩 Vihaan is 12 years old. Ananya is 6 years older than Vihaan. How old is Ananya? (a) not enough info (b) 6 (c) 19 (d) 18
38. 38.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
39. 39.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
40. 40.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True

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