Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 209 · 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.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
2. 2.🧩 Diya bought 5 markers and a bag for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹100 (b) ₹20 (c) ₹95 (d) not enough info
3. 3.🧩 Arjun bought 4 kites and a cap for ₹150 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹37 (c) ₹150 (d) ₹146
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
5. 5.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 8 (d) 80
6. 6.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 20 (b) not enough info (c) 8 (d) 15
7. 7.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
8. 8.🥭 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) no, check more (c) no mango is sweet (d) yes, mangoes match
9. 9.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
10. 10.🧩 A box has 7 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 63 (b) 72 (c) 16 (d) not enough info
11. 11.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 24 (b) not enough info (c) 9 (d) 18
12. 12.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 20 (b) not enough info (c) 8 (d) 15
13. 13.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
16. 16.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
18. 18.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 3 PM
19. 19.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
21. 21.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Aarav is 9 years old. Nisha is older than Aarav. How old is Nisha? (a) 10 (b) 11 (c) 14 (d) not enough info
25. 25.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 35 (c) not enough info (d) 11
26. 26.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
27. 27.🧩 A box has 4 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 25 (b) not enough info (c) 9 (d) 20
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
29. 29.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) not enough info (c) 8 (d) 4
30. 30.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
31. 31.🧩 Ishaan is 10 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 11 (b) 12 (c) not enough info (d) 15
32. 32.🧩 Meera is 11 years old. Diya is older than Meera. How old is Diya? (a) 12 (b) 16 (c) 13 (d) not enough info
33. 33.🧩 Meera bought 6 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹25 (d) ₹120
34. 34.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 20 (b) 9 (c) 24 (d) not enough info
35. 35.🧩 Kabir is 12 years old. Nisha is 2 years older than Kabir. How old is Nisha? (a) 2 (b) 14 (c) 15 (d) not enough info
36. 36.🧩 Aarav bought 2 balls and a bag for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹130 (b) ₹128 (c) ₹65 (d) not enough info
37. 37.🧩 Aarav is 8 years old. Ishaan is 2 years older than Aarav. How old is Ishaan? (a) not enough info (b) 2 (c) 11 (d) 10
38. 38.🧩 Meera bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹240 (d) ₹65
39. 39.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
40. 40.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 80 (d) 16

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