Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 977 · 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.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
2. 2.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
4. 4.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 2 PM (d) not enough info
9. 9.🧩 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
10. 10.🧩 A box has 6 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 36 (b) not enough info (c) 42 (d) 12
11. 11.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 8 PM
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
13. 13.🧩 Arjun bought 2 kites for ₹80 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹80 (c) ₹45 (d) ₹40
14. 14.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
15. 15.🧩 Nisha bought 2 balls for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹110 (d) ₹55
16. 16.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 3 PM
17. 17.🧩 Tara is 6 years old. Ishaan is 5 years older than Tara. How old is Ishaan? (a) not enough info (b) 5 (c) 12 (d) 11
18. 18.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
19. 19.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 56 (c) 48 (d) 14
20. 20.🧩 A box has 4 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 40 (c) 12 (d) 32
21. 21.🧩 Kabir is 11 years old. Diya is 4 years older than Kabir. How old is Diya? (a) not enough info (b) 16 (c) 15 (d) 4
22. 22.🧩 Rohan is 10 years old. Saanvi is older than Rohan. How old is Saanvi? (a) not enough info (b) 11 (c) 12 (d) 15
23. 23.🧩 Aarav bought 5 pens for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹250 (c) not enough info (d) ₹50
24. 24.🧩 Rohan is 6 years old. Diya is older than Rohan. How old is Diya? (a) not enough info (b) 7 (c) 8 (d) 11
25. 25.🧩 Tara bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹25 (c) not enough info (d) ₹75
26. 26.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
27. 27.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
28. 28.🧩 A box has 4 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 32 (b) not enough info (c) 12 (d) 40
29. 29.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 63 (b) 15 (c) not enough info (d) 54
30. 30.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) not enough info (c) 12 (d) 6
31. 31.🧩 Aarav bought 4 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹100 (d) ₹25
32. 32.🧩 Meera is 9 years old. Tara is older than Meera. How old is Tara? (a) 14 (b) 11 (c) not enough info (d) 10
33. 33.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 9 (c) 18 (d) 90
34. 34.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
35. 35.🧩 Nisha bought 3 notebooks and a bag for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹167 (c) ₹170 (d) ₹56
36. 36.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Nisha bought 3 balls and a water bottle for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹237 (b) not enough info (c) ₹80 (d) ₹240
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
40. 40.🧩 Aarav is 6 years old. Nisha is older than Aarav. How old is Nisha? (a) 8 (b) not enough info (c) 11 (d) 7

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