Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 874 · 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.🧩 Rohan bought 2 pens for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹70 (b) ₹40 (c) ₹35 (d) not enough info
2. 2.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
4. 4.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
5. 5.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 7 (d) 70
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.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
8. 8.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 6 PM
9. 9.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Ananya bought 4 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) not enough info (c) ₹40 (d) ₹15
12. 12.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
13. 13.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
14. 14.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
15. 15.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) 64 (b) 16 (c) not enough info (d) 72
16. 16.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
18. 18.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 40 (c) not enough info (d) 8
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
21. 21.🧩 Tara bought 4 notebooks and a cap for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹22 (b) ₹90 (c) ₹86 (d) not enough info
22. 22.🧩 Rohan is 12 years old. Ishaan is 3 years older than Rohan. How old is Ishaan? (a) 16 (b) 15 (c) 3 (d) not enough info
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Vihaan bought 3 pens for ₹165 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹165 (c) ₹55 (d) ₹60
25. 25.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
27. 27.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 5 PM
28. 28.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
29. 29.🧩 Diya bought 3 notebooks and a cap for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹57 (c) ₹20 (d) ₹60
30. 30.🧩 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
31. 31.🧩 Diya bought 4 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹100 (b) ₹30 (c) not enough info (d) ₹25
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
33. 33.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
34. 34.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 6 PM
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
36. 36.🧩 Nisha bought 6 mangoes and a cap for ₹420 in all. Each mango cost the same. What did one mango cost? (a) ₹70 (b) ₹420 (c) ₹414 (d) not enough info
37. 37.🧩 Kabir bought 2 markers and a cap for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹75 (b) ₹150 (c) not enough info (d) ₹148
38. 38.🧩 Diya is 10 years old. Rohan is 4 years older than Diya. How old is Rohan? (a) 4 (b) 15 (c) not enough info (d) 14
39. 39.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
40. 40.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) 5 (c) not enough info (d) 50

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