Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 272 · 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: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
2. 2.🧩 Ishaan is 10 years old. Diya is 5 years older than Ishaan. How old is Diya? (a) 16 (b) 5 (c) not enough info (d) 15
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
4. 4.🧩 Saanvi is 10 years old. Kabir is 7 years older than Saanvi. How old is Kabir? (a) not enough info (b) 18 (c) 7 (d) 17
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
6. 6.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) 60 (c) not enough info (d) 6
7. 7.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
8. 8.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
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
12. 12.🧩 Rohan is 11 years old. Arjun is older than Rohan. How old is Arjun? (a) 12 (b) 13 (c) not enough info (d) 16
13. 13.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 40 (c) not enough info (d) 8
14. 14.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 7 (d) 16
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
16. 16.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) 4 PM (d) not enough info
17. 17.🧩 Nisha is 6 years old. Aarav is 2 years older than Nisha. How old is Aarav? (a) 9 (b) 2 (c) not enough info (d) 8
18. 18.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
19. 19.🧩 Ananya bought 2 markers and a bag for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹30 (c) not enough info (d) ₹58
20. 20.🧩 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
21. 21.🧩 Aarav bought 5 markers and a water bottle for ₹190 in all. Each marker cost the same. What did one marker cost? (a) ₹185 (b) not enough info (c) ₹190 (d) ₹38
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
24. 24.🧩 A box has 5 rows of oranges, with 9 in each row. How many oranges are in the box? (a) not enough info (b) 14 (c) 54 (d) 45
25. 25.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
26. 26.🧩 Meera is 12 years old. Ananya is older than Meera. How old is Ananya? (a) 17 (b) 14 (c) 13 (d) not enough info
27. 27.🧩 A box has 8 rows of apples, with 9 in each row. How many apples are in the box? (a) 17 (b) not enough info (c) 81 (d) 72
28. 28.🧩 Nisha is 9 years old. Ananya is older than Nisha. How old is Ananya? (a) 14 (b) 11 (c) 10 (d) not enough info
29. 29.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
30. 30.🧩 Meera bought 6 mangoes for ₹210 in all. Each mango cost the same. What did one mango cost? (a) ₹210 (b) ₹40 (c) not enough info (d) ₹35
31. 31.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
32. 32.🧩 Kabir bought 6 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹35 (c) not enough info (d) ₹180
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
36. 36.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
37. 37.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
38. 38.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
39. 39.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
40. 40.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True

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