Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 913 · 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.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
5. 5.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
6. 6.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
8. 8.📊 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
9. 9.🧩 Diya bought 2 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹50 (c) ₹90 (d) not enough info
10. 10.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Kabir is 11 years old. Tara is 4 years older than Kabir. How old is Tara? (a) 15 (b) 16 (c) 4 (d) not enough info
12. 12.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
14. 14.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
15. 15.🧩 Rohan is 6 years old. Saanvi is older than Rohan. How old is Saanvi? (a) 8 (b) 7 (c) not enough info (d) 11
16. 16.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
17. 17.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
18. 18.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 3 PM
19. 19.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 3 PM
20. 20.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
21. 21.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
22. 22.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
24. 24.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) 8 PM (d) not enough info
26. 26.🧩 A box has 7 rows of oranges, with 8 in each row. How many oranges are in the box? (a) not enough info (b) 15 (c) 64 (d) 56
27. 27.🧩 Ananya is 8 years old. Vihaan is 5 years older than Ananya. How old is Vihaan? (a) 14 (b) 13 (c) 5 (d) not enough info
28. 28.🧩 Ishaan bought 6 pens for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹40 (c) ₹210 (d) not enough info
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Nisha is 9 years old. Vihaan is older than Nisha. How old is Vihaan? (a) not enough info (b) 14 (c) 10 (d) 11
31. 31.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
32. 32.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
33. 33.🧩 Diya is 6 years old. Nisha is older than Diya. How old is Nisha? (a) 8 (b) 11 (c) 7 (d) not enough info
34. 34.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
35. 35.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
36. 36.🧩 Ishaan bought 2 balls and a lunch box for ₹70 in all. Each ball cost the same. What did one ball cost? (a) ₹70 (b) ₹35 (c) ₹68 (d) not enough info
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
38. 38.🧩 Nisha is 8 years old. Ananya is 2 years older than Nisha. How old is Ananya? (a) 2 (b) not enough info (c) 11 (d) 10
39. 39.🧩 A box has 8 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 36 (b) 12 (c) not enough info (d) 32
40. 40.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 10 PM (c) not enough info (d) 6 PM

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