Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 468 · 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? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Vihaan is 7 years old. Kabir is older than Vihaan. How old is Kabir? (a) 9 (b) not enough info (c) 12 (d) 8
3. 3.🧩 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
4. 4.🧩 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
5. 5.🧩 Diya bought 5 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹50 (b) ₹15 (c) not enough info (d) ₹10
6. 6.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
7. 7.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
8. 8.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 48 (c) 42 (d) 13
9. 9.🧩 Rohan bought 6 notebooks and a bag for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹160 (b) ₹26 (c) ₹154 (d) not enough info
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
11. 11.🧩 Vihaan bought 3 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) not enough info (c) ₹10 (d) ₹30
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
13. 13.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Nisha bought 4 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹50 (b) ₹45 (c) ₹180 (d) not enough info
15. 15.🧩 Meera bought 4 notebooks and a cap for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹146 (b) not enough info (c) ₹37 (d) ₹150
16. 16.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
17. 17.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
18. 18.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
19. 19.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, it is certain (d) yes, mangoes match
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
21. 21.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
22. 22.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 12 (b) not enough info (c) 40 (d) 35
23. 23.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
26. 26.🧩 Rohan bought 3 pens and a bag for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹165 (b) ₹55 (c) ₹162 (d) not enough info
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
28. 28.🧩 Meera bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹25 (d) ₹50
29. 29.🧩 Rohan is 10 years old. Ananya is 9 years older than Rohan. How old is Ananya? (a) 20 (b) 19 (c) not enough info (d) 9
30. 30.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
31. 31.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
32. 32.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
33. 33.🧩 A box has 6 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 63 (b) not enough info (c) 15 (d) 54
34. 34.🧩 Diya is 12 years old. Ananya is older than Diya. How old is Ananya? (a) 13 (b) 17 (c) 14 (d) not enough info
35. 35.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 2 PM
36. 36.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
37. 37.🧩 Vihaan bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹70 (b) not enough info (c) ₹40 (d) ₹35
38. 38.🧩 Diya is 6 years old. Nisha is 6 years older than Diya. How old is Nisha? (a) 13 (b) 6 (c) not enough info (d) 12
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
40. 40.🧩 A box has 4 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 11 (b) 28 (c) not enough info (d) 35

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