Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 214 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
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.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
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
7. 7.🧩 A box has 8 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 13 (b) 40 (c) not enough info (d) 45
8. 8.🧩 A box has 4 rows of apples, with 8 in each row. How many apples are in the box? (a) 32 (b) 40 (c) 12 (d) not enough info
9. 9.🧩 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
10. 10.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
11. 11.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
12. 12.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
13. 13.🧩 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
14. 14.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 3 PM
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
16. 16.🧩 A box has 3 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 36 (b) not enough info (c) 27 (d) 12
17. 17.🧩 Nisha bought 2 kites and a cap for ₹130 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹130 (d) ₹128
18. 18.🥭 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, mangoes match (c) no, check more (d) yes, it is certain
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
20. 20.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
21. 21.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
22. 22.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 3 PM (d) 5 PM
23. 23.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
24. 24.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
25. 25.🧩 Diya bought 5 balls and a bag for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹18 (b) not enough info (c) ₹90 (d) ₹85
26. 26.🧩 Diya is 9 years old. Vihaan is 8 years older than Diya. How old is Vihaan? (a) 17 (b) 18 (c) not enough info (d) 8
27. 27.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Aarav bought 4 notebooks and a bag for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) ₹42 (b) ₹166 (c) ₹170 (d) not enough info
30. 30.🧩 A box has 4 rows of oranges, with 9 in each row. How many oranges are in the box? (a) not enough info (b) 36 (c) 13 (d) 45
31. 31.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) not enough info (c) 70 (d) 7
32. 32.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
34. 34.🧩 Diya bought 2 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹30 (c) not enough info (d) ₹35
35. 35.🧩 Tara bought 5 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹65 (c) not enough info (d) ₹300
36. 36.🧩 Kabir bought 3 balls and a water bottle for ₹80 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹80 (c) ₹26 (d) ₹77
37. 37.🧩 Aarav bought 2 markers and a water bottle for ₹140 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹138 (c) ₹70 (d) ₹140
38. 38.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) 3 PM (d) not enough info
39. 39.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 2 PM (c) not enough info (d) 5 PM
40. 40.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True

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