Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 379 · 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? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
3. 3.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 8 PM
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
5. 5.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
6. 6.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
7. 7.🥭 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) yes, mangoes match (c) no, check more (d) no mango is sweet
8. 8.🧩 Tara bought 2 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹80 (b) not enough info (c) ₹40 (d) ₹45
9. 9.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
11. 11.🧩 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
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
14. 14.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Ananya bought 4 pens and a water bottle for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹27 (b) ₹106 (c) ₹110 (d) not enough info
17. 17.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
18. 18.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
19. 19.🧩 Meera bought 5 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) ₹75 (b) ₹20 (c) not enough info (d) ₹15
20. 20.🧩 Nisha is 9 years old. Ananya is 3 years older than Nisha. How old is Ananya? (a) 3 (b) not enough info (c) 13 (d) 12
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
22. 22.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
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.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
25. 25.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
26. 26.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
27. 27.🧩 Saanvi is 8 years old. Nisha is 6 years older than Saanvi. How old is Nisha? (a) 15 (b) 6 (c) 14 (d) not enough info
28. 28.🧩 Saanvi bought 2 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹80 (c) not enough info (d) ₹40
29. 29.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Nisha bought 5 kites for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) not enough info (c) ₹40 (d) ₹200
31. 31.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 54 (b) 15 (c) not enough info (d) 63
32. 32.🧩 Diya bought 5 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) not enough info (c) ₹30 (d) ₹35
33. 33.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
34. 34.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
35. 35.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
36. 36.🧩 A box has 5 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 45 (c) 54 (d) 14
37. 37.🧩 Ananya is 10 years old. Diya is older than Ananya. How old is Diya? (a) 15 (b) 12 (c) not enough info (d) 11
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
39. 39.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 7 PM (d) 6 PM
40. 40.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info

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