Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 729 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Diya is 9 years old. Saanvi is 2 years older than Diya. How old is Saanvi? (a) 11 (b) 12 (c) not enough info (d) 2
3. 3.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
6. 6.🧩 A box has 5 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 36 (c) 11 (d) 30
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Kabir bought 5 markers for ₹75 in all. Each marker cost the same. What did one marker cost? (a) ₹75 (b) ₹15 (c) ₹20 (d) not enough info
11. 11.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) 16 (b) 8 (c) not enough info (d) 20
12. 12.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
13. 13.🧩 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
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
16. 16.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
17. 17.🧩 Nisha bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) not enough info (c) ₹15 (d) ₹40
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
19. 19.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
20. 20.🧩 Kabir bought 4 balls for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹140 (b) ₹40 (c) not enough info (d) ₹35
21. 21.🧩 Arjun is 6 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 8 (b) 7 (c) 11 (d) not enough info
22. 22.🧩 Tara is 9 years old. Rohan is 8 years older than Tara. How old is Rohan? (a) 18 (b) 8 (c) not enough info (d) 17
23. 23.🧩 Vihaan is 6 years old. Nisha is older than Vihaan. How old is Nisha? (a) 11 (b) 7 (c) not enough info (d) 8
24. 24.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 6 PM (c) 5 PM (d) not enough info
25. 25.🧩 Aarav bought 4 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹60
26. 26.🧩 Tara bought 3 notebooks and a bag for ₹215 in all. Each notebook cost the same. What did one notebook cost? (a) ₹71 (b) not enough info (c) ₹212 (d) ₹215
27. 27.🧩 A box has 8 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 40 (b) 13 (c) 45 (d) not enough info
28. 28.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
29. 29.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
30. 30.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
31. 31.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 8 (b) not enough info (c) 20 (d) 16
32. 32.True or false: “One mango in the box was sour, so all the mangoes are sour.” 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) not enough evidence (b) enough evidence
34. 34.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
35. 35.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
37. 37.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
38. 38.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
39. 39.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
40. 40.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info

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