Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 811 · 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.🧩 A box has 6 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 54 (b) 63 (c) not enough info (d) 15
2. 2.🧩 A box has 4 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 11 (b) not enough info (c) 35 (d) 28
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
5. 5.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 16 (c) 12 (d) 7
6. 6.🧩 Nisha bought 2 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹60 (c) ₹30 (d) not enough info
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
8. 8.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) 32 (b) 11 (c) not enough info (d) 28
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Aarav is 11 years old. Nisha is 3 years older than Aarav. How old is Nisha? (a) 14 (b) not enough info (c) 3 (d) 15
12. 12.🧩 Tara bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹20 (d) ₹30
13. 13.🧩 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
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
16. 16.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
17. 17.🧩 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
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
20. 20.🧩 Vihaan bought 2 kites for ₹70 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹70 (c) ₹35 (d) not enough info
21. 21.🧩 Aarav bought 5 notebooks and a lunch box for ₹230 in all. Each notebook cost the same. What did one notebook cost? (a) ₹46 (b) ₹230 (c) not enough info (d) ₹225
22. 22.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Diya is 9 years old. Arjun is older than Diya. How old is Arjun? (a) not enough info (b) 14 (c) 11 (d) 10
24. 24.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
25. 25.🧩 Saanvi bought 2 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹65 (d) ₹120
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
27. 27.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
28. 28.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 3 PM
29. 29.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 10 PM (d) 9 PM
30. 30.🥭 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) yes, it is certain (c) yes, mangoes match (d) no, check more
31. 31.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
32. 32.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
33. 33.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
34. 34.🧩 A box has 3 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 24 (b) 18 (c) not enough info (d) 9
35. 35.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
36. 36.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 36 (b) 32 (c) 12 (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.🧩 Aarav is 8 years old. Ananya is older than Aarav. How old is Ananya? (a) 9 (b) 13 (c) not enough info (d) 10
39. 39.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend

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