Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 82 · 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.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
2. 2.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
6. 6.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) not enough info (b) 12 (c) 36 (d) 27
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
8. 8.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
9. 9.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
10. 10.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
11. 11.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
12. 12.🧩 Saanvi bought 6 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹15 (c) ₹90 (d) ₹20
13. 13.🧩 A box has 4 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 13 (b) not enough info (c) 36 (d) 45
14. 14.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 3 PM
15. 15.🧩 Diya is 8 years old. Vihaan is 2 years older than Diya. How old is Vihaan? (a) 2 (b) not enough info (c) 11 (d) 10
16. 16.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
17. 17.🧩 A box has 6 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 42 (b) 36 (c) not enough info (d) 12
18. 18.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 49 (b) 14 (c) not enough info (d) 56
19. 19.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Ananya bought 2 notebooks for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) ₹60 (c) ₹55 (d) not enough info
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 10 (b) 24 (c) 28 (d) not enough info
24. 24.🧩 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
25. 25.🧩 Ananya bought 2 pens and a bag for ₹150 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹148 (c) ₹150 (d) ₹75
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
28. 28.🧩 Kabir is 10 years old. Ishaan is 7 years older than Kabir. How old is Ishaan? (a) 18 (b) not enough info (c) 17 (d) 7
29. 29.🧩 Rohan bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹25 (c) ₹50 (d) ₹30
30. 30.🧩 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
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 6 PM (c) 3 PM (d) not enough info
33. 33.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) 6 (c) not enough info (d) 12
34. 34.🧩 Rohan is 12 years old. Nisha is 4 years older than Rohan. How old is Nisha? (a) not enough info (b) 16 (c) 4 (d) 17
35. 35.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 24 (b) 9 (c) not enough info (d) 20
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
37. 37.🧩 Kabir bought 5 markers and a bag for ₹80 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹80 (c) ₹75 (d) ₹16
38. 38.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
39. 39.🧩 Tara is 9 years old. Saanvi is older than Tara. How old is Saanvi? (a) 10 (b) 14 (c) 11 (d) not enough info
40. 40.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence

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