Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 22 · 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.🧩 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.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
4. 4.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 36 (b) not enough info (c) 11 (d) 30
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
6. 6.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) 64 (b) 16 (c) not enough info (d) 72
7. 7.🧩 Saanvi bought 3 mangoes for ₹165 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹55 (c) ₹165 (d) not enough info
8. 8.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
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
10. 10.🧩 Saanvi is 7 years old. Diya is older than Saanvi. How old is Diya? (a) 8 (b) 9 (c) 12 (d) not enough info
11. 11.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
12. 12.🧩 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
13. 13.🧩 Kabir is 11 years old. Ishaan is 7 years older than Kabir. How old is Ishaan? (a) 7 (b) 19 (c) not enough info (d) 18
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
18. 18.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
19. 19.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
20. 20.🧩 Meera bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) ₹40 (c) not enough info (d) ₹45
21. 21.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Ananya is 9 years old. Tara is older than Ananya. How old is Tara? (a) not enough info (b) 14 (c) 10 (d) 11
24. 24.🥭 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, it is certain (c) no, check more (d) yes, mangoes match
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
26. 26.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
27. 27.🧩 A box has 7 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 14 (c) 49 (d) 56
28. 28.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 8 PM (c) 7 PM (d) not enough info
29. 29.🧩 Saanvi is 6 years old. Tara is 8 years older than Saanvi. How old is Tara? (a) not enough info (b) 8 (c) 15 (d) 14
30. 30.🧩 Tara bought 3 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹150 (c) not enough info (d) ₹50
31. 31.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 7 PM
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
34. 34.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
36. 36.🧩 Aarav is 9 years old. Meera is older than Aarav. How old is Meera? (a) 11 (b) 14 (c) not enough info (d) 10
37. 37.🧩 A box has 5 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 13 (b) 40 (c) not enough info (d) 48
38. 38.🧩 Kabir bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹30 (c) ₹120 (d) ₹35
39. 39.🧩 Ananya is 9 years old. Aarav is older than Ananya. How old is Aarav? (a) not enough info (b) 10 (c) 14 (d) 11
40. 40.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

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