Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 191 · 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.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) not enough info (c) 5 PM (d) 6 PM
2. 2.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
3. 3.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
4. 4.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
5. 5.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
9. 9.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
12. 12.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 24 (b) 10 (c) not enough info (d) 28
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
15. 15.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
16. 16.🧩 Diya is 10 years old. Kabir is older than Diya. How old is Kabir? (a) 15 (b) 12 (c) 11 (d) not enough info
17. 17.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
19. 19.🧩 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
20. 20.🧩 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
21. 21.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
22. 22.🧩 A box has 7 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 12 (b) 40 (c) 35 (d) not enough info
23. 23.🥭 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) no, check more (d) yes, mangoes match
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
25. 25.🧩 Vihaan bought 6 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) not enough info (c) ₹20 (d) ₹25
26. 26.🧩 Diya bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹240 (b) not enough info (c) ₹60 (d) ₹65
27. 27.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 16 (d) 20
28. 28.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
29. 29.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
30. 30.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
31. 31.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
32. 32.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
33. 33.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
34. 34.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
35. 35.🧩 A box has 3 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 15 (d) 20
36. 36.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 6 PM (d) 9 PM
37. 37.🧩 Saanvi is 7 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 8 (b) not enough info (c) 12 (d) 9
38. 38.🧩 Meera bought 4 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) ₹40 (c) ₹10 (d) not enough info
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
40. 40.🧩 Saanvi bought 5 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) not enough info (c) ₹50 (d) ₹10

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