Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 572 · 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 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
3. 3.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 36 (b) 13 (c) 45 (d) not enough info
4. 4.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 2 PM (d) 5 PM
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
6. 6.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 13 (b) 42 (c) not enough info (d) 48
7. 7.🧩 Rohan is 12 years old. Ishaan is older than Rohan. How old is Ishaan? (a) 17 (b) not enough info (c) 14 (d) 13
8. 8.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) not enough info (b) 7 (c) 14 (d) 70
9. 9.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 4 PM (c) 2 PM (d) not enough info
10. 10.🧩 Ananya is 11 years old. Saanvi is 6 years older than Ananya. How old is Saanvi? (a) not enough info (b) 18 (c) 17 (d) 6
11. 11.🥭 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, mangoes match (c) no mango is sweet (d) yes, it is certain
12. 12.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
13. 13.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
14. 14.🧩 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
15. 15.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
16. 16.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
17. 17.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
19. 19.🧩 A box has 8 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 64 (b) 16 (c) 72 (d) not enough info
20. 20.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
22. 22.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
23. 23.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
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
25. 25.🧩 Nisha is 9 years old. Vihaan is older than Nisha. How old is Vihaan? (a) 14 (b) 10 (c) 11 (d) not enough info
26. 26.🧩 Rohan bought 6 markers and a cap for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹114 (b) not enough info (c) ₹20 (d) ₹120
27. 27.🧩 Kabir is 12 years old. Aarav is 9 years older than Kabir. How old is Aarav? (a) not enough info (b) 22 (c) 9 (d) 21
28. 28.🧩 Ananya bought 4 kites and a bag for ₹310 in all. Each kite cost the same. What did one kite cost? (a) ₹310 (b) ₹306 (c) ₹77 (d) not enough info
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
30. 30.🧩 Kabir bought 6 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹50 (c) ₹300 (d) ₹55
31. 31.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 70 (b) not enough info (c) 14 (d) 7
32. 32.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 3 PM (d) 6 PM
33. 33.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
36. 36.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
37. 37.🧩 Tara is 12 years old. Rohan is 5 years older than Tara. How old is Rohan? (a) 18 (b) 5 (c) not enough info (d) 17
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
39. 39.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 8 PM
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend

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