Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 868 · 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 rumour (b) facts that support it (c) a loud opinion (d) a guess
2. 2.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
3. 3.🧩 Diya bought 3 pens and a water bottle for ₹185 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹182 (c) ₹185 (d) ₹61
4. 4.🧩 Saanvi bought 6 pens for ₹210 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹210
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 12 (b) not enough info (c) 7 (d) 16
8. 8.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
12. 12.🧩 Ananya bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹60 (c) ₹275 (d) not enough info
13. 13.🧩 Diya bought 3 balls and a lunch box for ₹205 in all. Each ball cost the same. What did one ball cost? (a) ₹205 (b) ₹202 (c) ₹68 (d) not enough info
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Ishaan is 11 years old. Nisha is older than Ishaan. How old is Nisha? (a) 13 (b) 12 (c) 16 (d) not enough info
16. 16.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 8 PM (d) 7 PM
17. 17.🧩 Meera bought 6 markers for ₹360 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) not enough info (c) ₹60 (d) ₹360
18. 18.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
19. 19.🧩 Tara is 7 years old. Diya is older than Tara. How old is Diya? (a) 12 (b) 9 (c) not enough info (d) 8
20. 20.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
21. 21.🧩 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
22. 22.🧩 Nisha bought 5 kites for ₹225 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹50 (c) ₹225 (d) ₹45
23. 23.🧩 Aarav bought 2 mangoes for ₹110 in all. Each mango cost the same. What did one mango cost? (a) ₹110 (b) not enough info (c) ₹60 (d) ₹55
24. 24.🧩 Kabir is 7 years old. Saanvi is 4 years older than Kabir. How old is Saanvi? (a) 4 (b) 12 (c) 11 (d) not enough info
25. 25.🧩 Aarav is 7 years old. Tara is 3 years older than Aarav. How old is Tara? (a) not enough info (b) 10 (c) 11 (d) 3
26. 26.🧩 Diya is 9 years old. Nisha is older than Diya. How old is Nisha? (a) not enough info (b) 11 (c) 10 (d) 14
27. 27.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Ananya is 11 years old. Diya is older than Ananya. How old is Diya? (a) 13 (b) not enough info (c) 12 (d) 16
29. 29.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM
30. 30.🧩 Kabir bought 5 notebooks and a bag for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹235 (b) ₹240 (c) not enough info (d) ₹48
31. 31.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
32. 32.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
33. 33.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
35. 35.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) not enough info (d) 4 PM
36. 36.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
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.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
39. 39.🥭 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
40. 40.🧩 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

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