Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 441 · 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: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
2. 2.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
3. 3.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
5. 5.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
7. 7.🧩 Tara bought 5 pens for ₹225 in all. Each pen cost the same. What did one pen cost? (a) ₹225 (b) ₹50 (c) not enough info (d) ₹45
8. 8.🧩 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
9. 9.🧩 Kabir bought 5 pens and a cap for ₹195 in all. Each pen cost the same. What did one pen cost? (a) ₹39 (b) ₹190 (c) ₹195 (d) not enough info
10. 10.🧩 Meera bought 2 pens for ₹20 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹10 (d) ₹15
11. 11.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
12. 12.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
13. 13.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
15. 15.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
16. 16.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 9 (c) 90 (d) 18
17. 17.🧩 Meera is 9 years old. Vihaan is older than Meera. How old is Vihaan? (a) 10 (b) 14 (c) 11 (d) not enough info
18. 18.🧩 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
19. 19.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) not enough info (d) 7 PM
20. 20.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Rohan bought 3 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹180 (b) ₹65 (c) not enough info (d) ₹60
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
24. 24.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
26. 26.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
27. 27.🧩 Vihaan is 11 years old. Arjun is 9 years older than Vihaan. How old is Arjun? (a) 9 (b) 20 (c) not enough info (d) 21
28. 28.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
29. 29.🧩 A box has 4 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 28 (b) 35 (c) 11 (d) not enough info
30. 30.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
32. 32.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
33. 33.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Meera bought 6 pens and a bag for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹300 (b) ₹50 (c) ₹294 (d) not enough info
35. 35.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 10 PM
36. 36.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
37. 37.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
38. 38.🧩 Tara bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹275 (c) ₹60 (d) ₹55
39. 39.🧩 Ishaan is 7 years old. Rohan is 2 years older than Ishaan. How old is Rohan? (a) not enough info (b) 9 (c) 10 (d) 2
40. 40.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM

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