Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 178 · 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.📊 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
3. 3.🧩 Meera is 12 years old. Saanvi is 5 years older than Meera. How old is Saanvi? (a) 17 (b) not enough info (c) 5 (d) 18
4. 4.🧩 Rohan bought 3 mangoes and a cap for ₹195 in all. Each mango cost the same. What did one mango cost? (a) ₹65 (b) ₹195 (c) not enough info (d) ₹192
5. 5.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 8 PM
6. 6.🧩 Diya is 12 years old. Kabir is older than Diya. How old is Kabir? (a) 13 (b) 14 (c) 17 (d) not enough info
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
9. 9.🧩 Ananya bought 5 kites for ₹250 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹50 (c) ₹250 (d) ₹55
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
12. 12.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
13. 13.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 8 PM
14. 14.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
15. 15.🧩 Meera is 9 years old. Diya is 8 years older than Meera. How old is Diya? (a) 8 (b) 17 (c) not enough info (d) 18
16. 16.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
17. 17.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 4 PM
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.🧩 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
20. 20.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
24. 24.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
25. 25.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 5 PM
26. 26.🧩 Rohan is 11 years old. Nisha is older than Rohan. How old is Nisha? (a) 16 (b) not enough info (c) 12 (d) 13
27. 27.🧩 A box has 8 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 72 (c) 16 (d) 64
28. 28.🧩 Kabir is 6 years old. Diya is older than Kabir. How old is Diya? (a) not enough info (b) 11 (c) 8 (d) 7
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
30. 30.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
31. 31.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
34. 34.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
36. 36.🧩 A box has 8 rows of oranges, with 8 in each row. How many oranges are in the box? (a) not enough info (b) 64 (c) 72 (d) 16
37. 37.🧩 Saanvi bought 6 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) ₹15 (c) not enough info (d) ₹60
38. 38.🧩 A box has 6 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 63 (b) 54 (c) not enough info (d) 15
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
40. 40.🧩 Kabir bought 5 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹150 (b) ₹30 (c) not enough info (d) ₹35

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