Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 896 · 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) not enough evidence (b) enough evidence
2. 2.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
6. 6.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 9 (d) 24
7. 7.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
8. 8.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Vihaan bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹30 (c) ₹25 (d) ₹50
11. 11.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
12. 12.🧩 Saanvi is 11 years old. Ananya is older than Saanvi. How old is Ananya? (a) 12 (b) 16 (c) not enough info (d) 13
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
14. 14.🧩 A box has 3 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 7 (b) 12 (c) not enough info (d) 16
15. 15.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
16. 16.🧩 Aarav is 6 years old. Rohan is older than Aarav. How old is Rohan? (a) not enough info (b) 11 (c) 7 (d) 8
17. 17.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
20. 20.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Nisha is 11 years old. Vihaan is 7 years older than Nisha. How old is Vihaan? (a) not enough info (b) 19 (c) 7 (d) 18
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
23. 23.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
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.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
26. 26.🧩 Diya is 11 years old. Nisha is older than Diya. How old is Nisha? (a) 12 (b) 13 (c) 16 (d) not enough info
27. 27.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
28. 28.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 28 (b) 10 (c) not enough info (d) 24
29. 29.🧩 Nisha bought 2 markers and a lunch box for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹150 (b) ₹75 (c) not enough info (d) ₹148
30. 30.🧩 Saanvi bought 6 balls for ₹360 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹65 (c) ₹360 (d) not enough info
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
33. 33.🧩 A box has 7 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 63 (c) 16 (d) 72
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
35. 35.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
36. 36.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 45 (b) 13 (c) 36 (d) not enough info
37. 37.🧩 Ishaan is 10 years old. Saanvi is 8 years older than Ishaan. How old is Saanvi? (a) 8 (b) 18 (c) 19 (d) not enough info
38. 38.🧩 Diya bought 2 notebooks and a lunch box for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹58 (c) ₹60 (d) not enough info
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
40. 40.🧩 Kabir bought 2 markers and a cap for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹100 (b) ₹50 (c) not enough info (d) ₹98

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