Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 234 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Tara is 6 years old. Aarav is older than Tara. How old is Aarav? (a) 11 (b) not enough info (c) 8 (d) 7
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
5. 5.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
6. 6.🧩 Arjun is 6 years old. Nisha is 3 years older than Arjun. How old is Nisha? (a) 9 (b) not enough info (c) 3 (d) 10
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
8. 8.🧩 Meera bought 5 kites and a lunch box for ₹355 in all. Each kite cost the same. What did one kite cost? (a) ₹350 (b) ₹71 (c) not enough info (d) ₹355
9. 9.🧩 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
10. 10.🥭 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, it is certain (c) no, check more (d) yes, mangoes match
11. 11.🧩 Diya is 10 years old. Meera is 4 years older than Diya. How old is Meera? (a) 15 (b) 14 (c) not enough info (d) 4
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
13. 13.🧩 Ananya is 12 years old. Rohan is older than Ananya. How old is Rohan? (a) not enough info (b) 17 (c) 14 (d) 13
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
15. 15.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 6 PM (c) not enough info (d) 10 PM
16. 16.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
17. 17.🧩 Vihaan is 9 years old. Aarav is older than Vihaan. How old is Aarav? (a) 14 (b) 11 (c) 10 (d) not enough info
18. 18.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 7 PM
19. 19.🧩 Ananya bought 5 kites and a cap for ₹165 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹33 (c) ₹165 (d) ₹160
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
21. 21.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 5 PM
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
27. 27.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
28. 28.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
29. 29.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
30. 30.🧩 Ishaan is 11 years old. Meera is 7 years older than Ishaan. How old is Meera? (a) 19 (b) 7 (c) not enough info (d) 18
31. 31.🧩 Aarav bought 5 pens for ₹275 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹275 (c) ₹55 (d) ₹60
32. 32.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
33. 33.🧩 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
34. 34.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
35. 35.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
36. 36.🧩 Tara bought 4 kites and a lunch box for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹176 (b) not enough info (c) ₹180 (d) ₹45
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Tara is 9 years old. Ishaan is older than Tara. How old is Ishaan? (a) 10 (b) 11 (c) not enough info (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.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean

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