Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 939 · 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.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
4. 4.🧩 A box has 6 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 28 (b) 10 (c) not enough info (d) 24
5. 5.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
6. 6.🧩 Rohan is 9 years old. Diya is 6 years older than Rohan. How old is Diya? (a) not enough info (b) 6 (c) 16 (d) 15
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
8. 8.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 8 PM
9. 9.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
10. 10.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
11. 11.🧩 A box has 6 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 12 (c) 42 (d) 36
12. 12.🧩 Nisha bought 3 markers and a cap for ₹105 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹105 (c) ₹35 (d) ₹102
13. 13.🧩 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
14. 14.🧩 Kabir is 9 years old. Diya is older than Kabir. How old is Diya? (a) 10 (b) not enough info (c) 14 (d) 11
15. 15.🧩 Ishaan is 7 years old. Saanvi is 9 years older than Ishaan. How old is Saanvi? (a) not enough info (b) 17 (c) 9 (d) 16
16. 16.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
17. 17.🧩 Nisha bought 4 kites and a water bottle for ₹110 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹27 (c) ₹106 (d) ₹110
18. 18.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
19. 19.🧩 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
20. 20.🧩 Nisha bought 3 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹30 (c) ₹90 (d) not enough info
21. 21.🧩 Meera bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹25 (d) ₹40
22. 22.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 4 PM (c) not enough info (d) 7 PM
23. 23.🧩 Rohan is 8 years old. Diya is older than Rohan. How old is Diya? (a) 13 (b) 10 (c) not enough info (d) 9
24. 24.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
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 of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) not enough info (c) 7 (d) 70
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
28. 28.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) no, check more (d) yes, it is certain
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
30. 30.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
32. 32.🧩 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
33. 33.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Meera bought 5 pens and a bag for ₹115 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹23 (c) ₹110 (d) ₹115
35. 35.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
36. 36.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Arjun is 12 years old. Vihaan is 7 years older than Arjun. How old is Vihaan? (a) 7 (b) 19 (c) not enough info (d) 20
38. 38.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) 48 (b) not enough info (c) 14 (d) 56
39. 39.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Saanvi bought 4 markers and a cap for ₹250 in all. Each marker cost the same. What did one marker cost? (a) ₹246 (b) not enough info (c) ₹250 (d) ₹62

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