Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 815 · 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.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
5. 5.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
6. 6.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
7. 7.🧩 Kabir bought 2 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹90
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Ananya bought 3 markers and a cap for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹197 (b) ₹200 (c) not enough info (d) ₹66
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Tara is 6 years old. Nisha is older than Tara. How old is Nisha? (a) 8 (b) 7 (c) 11 (d) not enough info
12. 12.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 3 PM
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
14. 14.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
15. 15.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 70 (b) 14 (c) 7 (d) not enough info
16. 16.🥭 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 mango is sweet (d) no, check more
17. 17.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
19. 19.🧩 Vihaan bought 2 pens and a water bottle for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹118 (d) ₹60
20. 20.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
21. 21.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 2 PM (d) 5 PM
22. 22.🧩 Diya is 6 years old. Aarav is 3 years older than Diya. How old is Aarav? (a) 3 (b) not enough info (c) 9 (d) 10
23. 23.🧩 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
24. 24.🧩 Kabir is 7 years old. Rohan is older than Kabir. How old is Rohan? (a) 9 (b) 8 (c) 12 (d) not enough info
25. 25.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
27. 27.🧩 Kabir is 10 years old. Rohan is 3 years older than Kabir. How old is Rohan? (a) 3 (b) 13 (c) 14 (d) not enough info
28. 28.🧩 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
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
30. 30.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
31. 31.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 24 (b) 9 (c) not enough info (d) 18
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
33. 33.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
35. 35.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
36. 36.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 15 (b) 8 (c) 20 (d) not enough info
37. 37.🧩 Tara is 12 years old. Diya is older than Tara. How old is Diya? (a) 13 (b) 14 (c) 17 (d) not enough info
38. 38.🧩 Meera bought 3 notebooks and a lunch box for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹237 (b) ₹80 (c) ₹240 (d) not enough info
39. 39.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence

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