Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 762 · 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? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
3. 3.🧩 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
4. 4.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 6 PM (c) 7 PM (d) not enough info
5. 5.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
6. 6.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
7. 7.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
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Vihaan bought 5 markers and a water bottle for ₹325 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹320 (c) ₹325 (d) not enough info
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
11. 11.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Kabir bought 6 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹90 (c) not enough info (d) ₹15
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
15. 15.🧩 Nisha bought 5 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹15 (c) not enough info (d) ₹10
16. 16.🥭 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, mangoes match (c) no, check more (d) yes, it is certain
17. 17.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 8 PM (c) 9 PM (d) not enough info
18. 18.🧩 Diya is 11 years old. Vihaan is 4 years older than Diya. How old is Vihaan? (a) 4 (b) 15 (c) 16 (d) not enough info
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Ananya 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
21. 21.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) not enough info (b) 45 (c) 36 (d) 13
22. 22.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 10 (c) 28 (d) 21
23. 23.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
24. 24.🧩 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
25. 25.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
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
28. 28.🧩 Vihaan is 9 years old. Nisha is 5 years older than Vihaan. How old is Nisha? (a) 14 (b) not enough info (c) 5 (d) 15
29. 29.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
30. 30.🧩 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
31. 31.🧩 Vihaan is 8 years old. Meera is older than Vihaan. How old is Meera? (a) 13 (b) 10 (c) 9 (d) not enough info
32. 32.🧩 Tara bought 5 kites and a cap for ₹325 in all. Each kite cost the same. What did one kite cost? (a) ₹65 (b) not enough info (c) ₹320 (d) ₹325
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box has 8 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 45 (b) 13 (c) 40 (d) not enough info
35. 35.🧩 Ananya is 7 years old. Arjun is older than Ananya. How old is Arjun? (a) not enough info (b) 12 (c) 8 (d) 9
36. 36.🧩 Saanvi bought 2 balls and a cap for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹78 (b) not enough info (c) ₹80 (d) ₹40
37. 37.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
38. 38.🧩 Meera bought 3 notebooks and a bag for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹36 (b) ₹107 (c) ₹110 (d) not enough info
39. 39.🧩 Tara is 10 years old. Rohan is 6 years older than Tara. How old is Rohan? (a) not enough info (b) 17 (c) 6 (d) 16
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM

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