Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 782 · 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.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
3. 3.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Rohan is 8 years old. Kabir is 3 years older than Rohan. How old is Kabir? (a) 3 (b) 12 (c) 11 (d) not enough info
7. 7.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 9 (b) 20 (c) 24 (d) not enough info
8. 8.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) not enough info (b) 48 (c) 14 (d) 54
9. 9.🧩 Aarav bought 3 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹10
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
11. 11.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
13. 13.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
14. 14.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
15. 15.🥭 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) no mango is sweet (c) no, check more (d) yes, mangoes match
16. 16.🧩 Tara bought 5 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) ₹300 (b) not enough info (c) ₹65 (d) ₹60
17. 17.🧩 Ananya is 12 years old. Saanvi is older than Ananya. How old is Saanvi? (a) not enough info (b) 14 (c) 17 (d) 13
18. 18.🧩 Tara bought 6 mangoes and a bag for ₹410 in all. Each mango cost the same. What did one mango cost? (a) ₹68 (b) not enough info (c) ₹404 (d) ₹410
19. 19.🧩 Ishaan bought 3 pens for ₹45 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹45
20. 20.🧩 Rohan bought 4 notebooks and a bag for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) not enough info (c) ₹296 (d) ₹300
21. 21.🧩 Meera is 7 years old. Rohan is 3 years older than Meera. How old is Rohan? (a) 11 (b) 3 (c) not enough info (d) 10
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Meera bought 4 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) not enough info (c) ₹100 (d) ₹25
24. 24.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
25. 25.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
26. 26.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
29. 29.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
30. 30.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
31. 31.🧩 A box has 7 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 64 (b) not enough info (c) 15 (d) 56
32. 32.🧩 Tara is 8 years old. Meera is 8 years older than Tara. How old is Meera? (a) 16 (b) 17 (c) not enough info (d) 8
33. 33.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
34. 34.🧩 A box has 8 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 40 (b) 45 (c) not enough info (d) 13
35. 35.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
37. 37.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) 4 PM (d) not enough info
38. 38.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
39. 39.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing

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