Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 259 · 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? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Vihaan bought 5 mangoes for ₹125 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹30 (c) ₹125 (d) ₹25
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Diya is 12 years old. Ishaan is older than Diya. How old is Ishaan? (a) not enough info (b) 13 (c) 14 (d) 17
5. 5.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
6. 6.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
7. 7.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
8. 8.🧩 Meera is 6 years old. Nisha is 5 years older than Meera. How old is Nisha? (a) 5 (b) 11 (c) 12 (d) not enough info
9. 9.📊 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
10. 10.🧩 Nisha bought 2 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹25 (c) ₹20 (d) ₹40
11. 11.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
13. 13.🧩 Meera is 10 years old. Vihaan is 9 years older than Meera. How old is Vihaan? (a) 9 (b) 19 (c) not enough info (d) 20
14. 14.🥭 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, check more (d) no mango is sweet
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
16. 16.🧩 Vihaan bought 5 notebooks and a cap for ₹330 in all. Each notebook cost the same. What did one notebook cost? (a) ₹330 (b) not enough info (c) ₹66 (d) ₹325
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
20. 20.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 28 (b) 35 (c) not enough info (d) 11
21. 21.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
22. 22.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 7 PM (c) 6 PM (d) not enough info
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
24. 24.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
25. 25.🧩 Aarav bought 3 notebooks for ₹45 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) ₹45 (c) ₹20 (d) not enough info
26. 26.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) 4 PM (d) not enough info
27. 27.🧩 Kabir is 9 years old. Diya is 2 years older than Kabir. How old is Diya? (a) 2 (b) not enough info (c) 11 (d) 12
28. 28.🧩 A box has 3 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 20 (c) 15 (d) 8
29. 29.🧩 Vihaan bought 6 notebooks and a lunch box for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) ₹170 (b) ₹28 (c) not enough info (d) ₹164
30. 30.🧩 Ananya bought 4 mangoes and a lunch box for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹180 (b) ₹176 (c) not enough info (d) ₹45
31. 31.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
32. 32.🧩 Tara is 7 years old. Kabir is 4 years older than Tara. How old is Kabir? (a) not enough info (b) 11 (c) 12 (d) 4
33. 33.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
34. 34.🧩 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
35. 35.🧩 Ananya bought 3 mangoes for ₹105 in all. Each mango cost the same. What did one mango cost? (a) ₹105 (b) not enough info (c) ₹35 (d) ₹40
36. 36.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
38. 38.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
40. 40.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM

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