Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 974 · 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? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Arjun bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹175
6. 6.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) 11 (b) 32 (c) not enough info (d) 28
7. 7.🧩 A box has 8 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 48 (b) 54 (c) not enough info (d) 14
8. 8.🧩 Rohan bought 4 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) ₹20 (c) ₹80 (d) not enough info
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
10. 10.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
11. 11.🧩 Ananya is 10 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 12 (b) not enough info (c) 11 (d) 15
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
13. 13.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
14. 14.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 20 (c) 16 (d) 8
15. 15.🧩 Vihaan is 12 years old. Aarav is 7 years older than Vihaan. How old is Aarav? (a) 7 (b) 20 (c) 19 (d) not enough info
16. 16.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
17. 17.🧩 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
18. 18.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
19. 19.🧩 Rohan bought 2 markers for ₹30 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) not enough info (c) ₹20 (d) ₹15
20. 20.🧩 Meera is 9 years old. Kabir is older than Meera. How old is Kabir? (a) 11 (b) not enough info (c) 10 (d) 14
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
22. 22.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 4 PM (c) 7 PM (d) not enough info
23. 23.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
24. 24.🧩 Arjun is 9 years old. Tara is older than Arjun. How old is Tara? (a) 10 (b) 14 (c) 11 (d) not enough info
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
26. 26.🧩 Nisha bought 5 mangoes and a lunch box for ₹190 in all. Each mango cost the same. What did one mango cost? (a) ₹38 (b) not enough info (c) ₹190 (d) ₹185
27. 27.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
28. 28.🧩 Aarav is 6 years old. Saanvi is 6 years older than Aarav. How old is Saanvi? (a) 13 (b) 12 (c) 6 (d) not enough info
29. 29.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
30. 30.🧩 Ishaan bought 4 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹10 (d) ₹15
31. 31.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
32. 32.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) yes, mangoes match (d) no, check more
33. 33.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
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Saanvi bought 2 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹30 (c) ₹35 (d) not enough info
37. 37.🧩 Ananya is 8 years old. Kabir is 5 years older than Ananya. How old is Kabir? (a) 5 (b) 13 (c) not enough info (d) 14
38. 38.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Aarav is 10 years old. Kabir is 4 years older than Aarav. How old is Kabir? (a) not enough info (b) 14 (c) 15 (d) 4
40. 40.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence

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