Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 563 · 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? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Diya bought 2 balls and a bag for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) ₹100 (c) not enough info (d) ₹198
3. 3.🧩 Tara bought 5 markers for ₹125 in all. Each marker cost the same. What did one marker cost? (a) ₹125 (b) ₹25 (c) not enough info (d) ₹30
4. 4.🧩 A box has 3 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 7 (b) not enough info (c) 12 (d) 16
5. 5.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
7. 7.🧩 A box has 4 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 28 (b) not enough info (c) 11 (d) 35
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
9. 9.🧩 Tara bought 3 mangoes for ₹45 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹15 (c) ₹45 (d) not enough info
10. 10.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
12. 12.🧩 Tara bought 3 balls and a cap for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹160 (b) not enough info (c) ₹157 (d) ₹53
13. 13.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 2 PM
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, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
15. 15.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 80 (d) 16
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Diya is 9 years old. Vihaan is 4 years older than Diya. How old is Vihaan? (a) 13 (b) 4 (c) not enough info (d) 14
18. 18.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 48 (c) 13 (d) 42
19. 19.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
20. 20.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
21. 21.🧩 Aarav bought 3 mangoes and a bag for ₹155 in all. Each mango cost the same. What did one mango cost? (a) ₹152 (b) ₹155 (c) ₹51 (d) not enough info
22. 22.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 9 PM
23. 23.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Aarav is 6 years old. Arjun is older than Aarav. How old is Arjun? (a) 8 (b) 11 (c) 7 (d) not enough info
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Aarav is 7 years old. Ishaan is 8 years older than Aarav. How old is Ishaan? (a) 8 (b) 16 (c) 15 (d) not enough info
27. 27.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
28. 28.🧩 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
29. 29.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 2 PM
30. 30.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
31. 31.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
32. 32.🧩 Ananya is 6 years old. Nisha is 5 years older than Ananya. How old is Nisha? (a) not enough info (b) 12 (c) 11 (d) 5
33. 33.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
35. 35.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
36. 36.🧩 Saanvi is 11 years old. Aarav is 7 years older than Saanvi. How old is Aarav? (a) 7 (b) not enough info (c) 19 (d) 18
37. 37.🧩 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
38. 38.🧩 Rohan is 12 years old. Meera is 2 years older than Rohan. How old is Meera? (a) not enough info (b) 15 (c) 14 (d) 2
39. 39.🧩 Tara bought 5 markers and a bag for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹95 (c) ₹20 (d) ₹100
40. 40.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False

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