Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 575 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
2. 2.🧩 Tara is 6 years old. Arjun is older than Tara. How old is Arjun? (a) not enough info (b) 7 (c) 8 (d) 11
3. 3.🧩 Meera is 10 years old. Saanvi is 8 years older than Meera. How old is Saanvi? (a) 8 (b) 18 (c) not enough info (d) 19
4. 4.🧩 Meera bought 6 mangoes for ₹360 in all. Each mango cost the same. What did one mango cost? (a) ₹360 (b) ₹60 (c) not enough info (d) ₹65
5. 5.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
9. 9.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Vihaan bought 5 kites and a cap for ₹340 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹68 (c) ₹335 (d) ₹340
13. 13.🥭 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
14. 14.🧩 A box has 7 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 56 (b) 15 (c) not enough info (d) 64
15. 15.🧩 Arjun is 6 years old. Kabir is older than Arjun. How old is Kabir? (a) 11 (b) 8 (c) 7 (d) not enough info
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 45 (b) 36 (c) not enough info (d) 13
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 48 (c) 13 (d) 42
21. 21.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
22. 22.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) not enough info (d) 6 PM
23. 23.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) 7 PM (d) not enough info
24. 24.🧩 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
25. 25.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
26. 26.🧩 Meera is 6 years old. Vihaan is 9 years older than Meera. How old is Vihaan? (a) not enough info (b) 16 (c) 9 (d) 15
27. 27.🧩 Ananya is 10 years old. Meera is 7 years older than Ananya. How old is Meera? (a) not enough info (b) 7 (c) 17 (d) 18
28. 28.🧩 Nisha bought 2 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹120 (c) not enough info (d) ₹60
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Aarav bought 5 markers and a bag for ₹390 in all. Each marker cost the same. What did one marker cost? (a) ₹390 (b) not enough info (c) ₹78 (d) ₹385
31. 31.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
32. 32.🧩 Aarav bought 2 mangoes and a lunch box for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹180 (c) not enough info (d) ₹178
33. 33.🧩 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
34. 34.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
35. 35.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
36. 36.🧩 Diya is 6 years old. Meera is older than Diya. How old is Meera? (a) 8 (b) not enough info (c) 7 (d) 11
37. 37.🧩 Diya bought 3 pens and a cap for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹140 (b) ₹46 (c) ₹137 (d) not enough info
38. 38.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) not enough info (c) 6 PM (d) 5 PM
39. 39.🧩 A box has 3 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 36 (c) 12 (d) 27
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False

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