Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 254 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
2. 2.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
3. 3.🧩 Ananya is 12 years old. Meera is older than Ananya. How old is Meera? (a) 14 (b) 17 (c) 13 (d) not enough info
4. 4.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
5. 5.🧩 Ananya bought 2 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹50 (c) ₹30 (d) ₹25
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
9. 9.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
10. 10.🧩 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
11. 11.🧩 Ishaan bought 5 kites for ₹200 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹45 (c) ₹40 (d) ₹200
12. 12.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 6 PM (d) 10 PM
13. 13.🧩 Tara is 7 years old. Kabir is 8 years older than Tara. How old is Kabir? (a) 15 (b) 8 (c) 16 (d) not enough info
14. 14.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
15. 15.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
17. 17.🧩 Arjun bought 3 notebooks and a water bottle for ₹245 in all. Each notebook cost the same. What did one notebook cost? (a) ₹245 (b) ₹81 (c) not enough info (d) ₹242
18. 18.🧩 Nisha is 6 years old. Ananya is 6 years older than Nisha. How old is Ananya? (a) 12 (b) not enough info (c) 6 (d) 13
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
20. 20.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 5 PM
21. 21.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box has 3 rows of apples, with 6 in each row. How many apples are in the box? (a) 9 (b) 24 (c) not enough info (d) 18
24. 24.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) the colour of ink (d) your handwriting
25. 25.🧩 Saanvi bought 4 mangoes for ₹140 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹140 (d) ₹35
26. 26.🧩 Meera is 9 years old. Ananya is older than Meera. How old is Ananya? (a) not enough info (b) 14 (c) 10 (d) 11
27. 27.🧩 Tara is 12 years old. Diya is older than Tara. How old is Diya? (a) not enough info (b) 17 (c) 14 (d) 13
28. 28.🧩 A box has 3 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 28 (b) 21 (c) 10 (d) not enough info
29. 29.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
30. 30.🧩 Aarav bought 3 notebooks for ₹105 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹105
31. 31.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
32. 32.🧩 A box has 4 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 20 (c) 16 (d) 8
33. 33.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 7 PM
34. 34.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
35. 35.🧩 Ishaan bought 5 notebooks and a lunch box for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹155 (b) ₹160 (c) ₹32 (d) not enough info
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
40. 40.🧩 A box has 3 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 10 (b) not enough info (c) 21 (d) 28

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