Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 632 · 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.🧩 Kabir is 6 years old. Rohan is 9 years older than Kabir. How old is Rohan? (a) 9 (b) not enough info (c) 16 (d) 15
2. 2.🧩 Ishaan is 11 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) not enough info (b) 12 (c) 16 (d) 13
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
4. 4.🧩 Meera is 11 years old. Tara is older than Meera. How old is Tara? (a) 13 (b) 16 (c) 12 (d) not enough info
5. 5.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Rohan is 11 years old. Tara is 2 years older than Rohan. How old is Tara? (a) 14 (b) 13 (c) not enough info (d) 2
9. 9.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
10. 10.🧩 Nisha bought 5 notebooks and a water bottle for ₹320 in all. Each notebook cost the same. What did one notebook cost? (a) ₹315 (b) ₹64 (c) ₹320 (d) not enough info
11. 11.🧩 Diya bought 3 mangoes and a cap for ₹125 in all. Each mango cost the same. What did one mango cost? (a) ₹125 (b) ₹41 (c) not enough info (d) ₹122
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Saanvi is 9 years old. Meera is older than Saanvi. How old is Meera? (a) 14 (b) not enough info (c) 11 (d) 10
14. 14.🧩 Ananya is 6 years old. Aarav is older than Ananya. How old is Aarav? (a) 7 (b) 8 (c) not enough info (d) 11
15. 15.🥭 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, check more (c) no mango is sweet (d) yes, it is certain
16. 16.🧩 Aarav bought 4 pens and a lunch box for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹86 (b) ₹90 (c) ₹22 (d) not enough info
17. 17.🧩 Kabir is 6 years old. Tara is older than Kabir. How old is Tara? (a) 8 (b) 11 (c) 7 (d) not enough info
18. 18.🧩 Ishaan is 8 years old. Saanvi is 9 years older than Ishaan. How old is Saanvi? (a) 9 (b) 18 (c) 17 (d) not enough info
19. 19.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
20. 20.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Nisha bought 2 balls and a water bottle for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) not enough info (c) ₹60 (d) ₹118
22. 22.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
23. 23.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
24. 24.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 9 PM (d) 6 PM
25. 25.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
26. 26.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
29. 29.🧩 Saanvi is 8 years old. Arjun is older than Saanvi. How old is Arjun? (a) 10 (b) 13 (c) not enough info (d) 9
30. 30.🧩 Saanvi is 9 years old. Tara is 7 years older than Saanvi. How old is Tara? (a) 17 (b) not enough info (c) 7 (d) 16
31. 31.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 42 (d) 36
32. 32.🧩 Ishaan bought 4 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹180 (b) not enough info (c) ₹50 (d) ₹45
33. 33.🧩 Rohan is 6 years old. Arjun is 8 years older than Rohan. How old is Arjun? (a) not enough info (b) 8 (c) 14 (d) 15
34. 34.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
35. 35.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
36. 36.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
37. 37.🧩 Meera bought 3 balls and a lunch box for ₹175 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹58 (c) ₹172 (d) ₹175
38. 38.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box has 3 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 24 (b) 9 (c) not enough info (d) 18
40. 40.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False

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