Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 617 · 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? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
3. 3.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
4. 4.🧩 Rohan bought 6 mangoes and a water bottle for ₹400 in all. Each mango cost the same. What did one mango cost? (a) ₹400 (b) ₹394 (c) ₹66 (d) not enough info
5. 5.🧩 Aarav is 12 years old. Kabir is older than Aarav. How old is Kabir? (a) 17 (b) not enough info (c) 13 (d) 14
6. 6.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
7. 7.🧩 A box has 4 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 20 (b) 9 (c) not enough info (d) 25
8. 8.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
9. 9.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
10. 10.🧩 Nisha bought 6 markers and a bag for ₹160 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹26 (c) ₹154 (d) ₹160
11. 11.🧩 Meera bought 3 kites and a water bottle for ₹95 in all. Each kite cost the same. What did one kite cost? (a) ₹95 (b) ₹31 (c) ₹92 (d) not enough info
12. 12.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 3 PM
13. 13.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
14. 14.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🧩 A box has 7 rows of apples, with 5 in each row. How many apples are in the box? (a) 35 (b) 12 (c) not enough info (d) 40
19. 19.🧩 A box has 4 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 12 (b) 40 (c) not enough info (d) 32
20. 20.🧩 Arjun is 8 years old. Meera is 2 years older than Arjun. How old is Meera? (a) not enough info (b) 10 (c) 11 (d) 2
21. 21.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
22. 22.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
23. 23.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
27. 27.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
28. 28.🧩 Diya bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹60
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Diya bought 6 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹180 (b) ₹30 (c) ₹35 (d) not enough info
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
33. 33.🧩 A box has 8 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 32 (b) 12 (c) 36 (d) not enough info
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
36. 36.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 7 PM (d) 6 PM
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
38. 38.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
39. 39.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
40. 40.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True

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