Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 613 · 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.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
2. 2.🧩 Diya is 7 years old. Ananya is older than Diya. How old is Ananya? (a) 9 (b) not enough info (c) 8 (d) 12
3. 3.🧩 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
4. 4.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
5. 5.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
6. 6.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
9. 9.🧩 A box has 8 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 32 (b) 12 (c) not enough info (d) 36
10. 10.🥭 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
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
13. 13.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
14. 14.🧩 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
15. 15.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
16. 16.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) not enough info (c) 9 (d) 18
17. 17.🧩 Diya bought 6 notebooks and a water bottle for ₹350 in all. Each notebook cost the same. What did one notebook cost? (a) ₹344 (b) not enough info (c) ₹58 (d) ₹350
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
19. 19.🧩 A box has 3 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 20 (b) 8 (c) 15 (d) not enough info
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) False (b) True
21. 21.🧩 Arjun bought 4 balls and a lunch box for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹266 (b) not enough info (c) ₹67 (d) ₹270
22. 22.🧩 Kabir bought 2 mangoes and a cap for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹58 (c) ₹30 (d) ₹60
23. 23.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
24. 24.🧩 Aarav bought 5 mangoes and a bag for ₹315 in all. Each mango cost the same. What did one mango cost? (a) ₹315 (b) ₹310 (c) ₹63 (d) not enough info
25. 25.🧩 Diya bought 6 notebooks and a water bottle for ₹390 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹65 (c) ₹384 (d) ₹390
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
27. 27.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
28. 28.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
29. 29.🧩 Tara is 10 years old. Meera is 3 years older than Tara. How old is Meera? (a) 14 (b) 3 (c) not enough info (d) 13
30. 30.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) not enough info (c) 7 (d) 70
31. 31.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
32. 32.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
33. 33.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
34. 34.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
35. 35.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 36 (d) 32
36. 36.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
37. 37.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
38. 38.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
39. 39.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
40. 40.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True

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