Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 375 · 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.🧩 A box has 3 rows of apples, with 9 in each row. How many apples are in the box? (a) 36 (b) 27 (c) not enough info (d) 12
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Saanvi bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹100 (c) not enough info (d) ₹20
4. 4.🧩 A box has 3 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 24 (b) 11 (c) 32 (d) not enough info
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
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) no mango is sweet (c) yes, mangoes match (d) no, check more
10. 10.🧩 Vihaan bought 5 balls and a cap for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹32 (b) not enough info (c) ₹160 (d) ₹155
11. 11.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 6 (b) 60 (c) 12 (d) not enough info
12. 12.🧩 Diya bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹65 (d) ₹240
13. 13.🧩 Tara bought 2 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹100 (b) ₹55 (c) not enough info (d) ₹50
14. 14.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
15. 15.🧩 Aarav bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹20 (c) ₹30 (d) ₹15
16. 16.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
18. 18.🧩 Vihaan bought 6 balls and a water bottle for ₹430 in all. Each ball cost the same. What did one ball cost? (a) ₹71 (b) not enough info (c) ₹424 (d) ₹430
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
20. 20.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
22. 22.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
24. 24.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 2 PM (c) 4 PM (d) 3 PM
25. 25.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
26. 26.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
27. 27.🧩 Nisha bought 4 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) not enough info (c) ₹60 (d) ₹65
28. 28.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
29. 29.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
30. 30.🧩 Kabir bought 2 mangoes and a cap for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) not enough info (c) ₹100 (d) ₹98
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
32. 32.🧩 Tara is 11 years old. Ishaan is 6 years older than Tara. How old is Ishaan? (a) 6 (b) 17 (c) 18 (d) not enough info
33. 33.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) 6 PM (d) not enough info
34. 34.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 4 PM
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
36. 36.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
37. 37.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
38. 38.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
40. 40.🧩 Meera is 9 years old. Diya is 4 years older than Meera. How old is Diya? (a) 4 (b) not enough info (c) 13 (d) 14

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