Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 727 · 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 of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
2. 2.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 20 (d) 16
3. 3.🧩 Meera is 7 years old. Kabir is 6 years older than Meera. How old is Kabir? (a) 14 (b) not enough info (c) 6 (d) 13
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
6. 6.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
7. 7.🧩 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
8. 8.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
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Ananya bought 5 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹25 (c) ₹100 (d) ₹20
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
12. 12.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) no mango is sweet (d) yes, mangoes match
13. 13.🧩 A box has 7 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 72 (d) 63
14. 14.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Rohan bought 5 pens and a water bottle for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹155 (b) ₹160 (c) not enough info (d) ₹32
16. 16.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
17. 17.🧩 Aarav bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) ₹40 (c) not enough info (d) ₹45
18. 18.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
19. 19.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 3 PM
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Diya bought 2 balls and a lunch box for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹160 (b) not enough info (c) ₹158 (d) ₹80
22. 22.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
23. 23.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 35 (c) 11 (d) not enough info
24. 24.🧩 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
25. 25.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
27. 27.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
28. 28.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
29. 29.📊 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
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
31. 31.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
32. 32.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
33. 33.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
34. 34.🧩 Rohan bought 3 notebooks and a cap for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹130 (b) ₹43 (c) not enough info (d) ₹127
35. 35.🧩 Aarav is 9 years old. Saanvi is 3 years older than Aarav. How old is Saanvi? (a) 13 (b) 12 (c) not enough info (d) 3
36. 36.🧩 A box has 8 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 45 (b) 40 (c) not enough info (d) 13
37. 37.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 7 PM
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
40. 40.🧩 A box has 5 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 10 (b) 30 (c) not enough info (d) 25

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