Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 817 · 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 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 4 PM
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
5. 5.🧩 Nisha bought 4 mangoes for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹200 (b) ₹55 (c) ₹50 (d) not enough info
6. 6.🧩 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
7. 7.🧩 Vihaan is 6 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) 8 (b) 7 (c) 11 (d) not enough info
8. 8.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) 10 (b) 28 (c) not enough info (d) 21
9. 9.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
10. 10.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
12. 12.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
13. 13.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
14. 14.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) yes, mangoes match (d) no mango is sweet
15. 15.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
16. 16.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
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
18. 18.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
19. 19.🧩 Ananya bought 6 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹55 (c) ₹300 (d) ₹50
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
21. 21.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 16 (d) 8
22. 22.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
23. 23.🧩 Ananya bought 2 balls and a water bottle for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹160 (b) ₹158 (c) ₹80 (d) not enough info
24. 24.🧩 A box has 6 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 35 (c) 30 (d) 11
25. 25.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
28. 28.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
29. 29.🧩 A box has 4 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) not enough info (b) 45 (c) 13 (d) 36
30. 30.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
31. 31.🧩 Kabir bought 5 markers for ₹225 in all. Each marker cost the same. What did one marker cost? (a) ₹225 (b) not enough info (c) ₹50 (d) ₹45
32. 32.🧩 A box has 8 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 13 (b) 45 (c) not enough info (d) 40
33. 33.🧩 Nisha is 7 years old. Rohan is older than Nisha. How old is Rohan? (a) 8 (b) 9 (c) 12 (d) not enough info
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
36. 36.🧩 Rohan is 8 years old. Kabir is 2 years older than Rohan. How old is Kabir? (a) not enough info (b) 11 (c) 10 (d) 2
37. 37.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
38. 38.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
39. 39.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) 14 (b) 56 (c) 48 (d) not enough info
40. 40.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

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