Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 983 · 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 asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
3. 3.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 12 (d) 7
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Saanvi bought 4 markers and a lunch box for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹220 (b) ₹216 (c) not enough info (d) ₹55
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
8. 8.🧩 Tara bought 2 balls and a cap for ₹70 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹70 (c) ₹68 (d) ₹35
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
10. 10.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
11. 11.🧩 Rohan is 7 years old. Vihaan is older than Rohan. How old is Vihaan? (a) 8 (b) 9 (c) 12 (d) not enough info
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
13. 13.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) not enough info (d) 4 PM
14. 14.🧩 Aarav bought 4 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) not enough info (c) ₹180 (d) ₹50
15. 15.🧩 Ishaan bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹50 (c) ₹100 (d) not enough info
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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
18. 18.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
19. 19.🧩 Saanvi bought 6 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹180
20. 20.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
21. 21.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
22. 22.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
23. 23.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
25. 25.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 50 (b) 10 (c) 5 (d) not enough info
26. 26.🧩 Vihaan is 7 years old. Nisha is older than Vihaan. How old is Nisha? (a) not enough info (b) 12 (c) 8 (d) 9
27. 27.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
28. 28.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
29. 29.🧩 Nisha bought 5 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹200
30. 30.🧩 Diya bought 3 markers for ₹30 in all. Each marker cost the same. What did one marker cost? (a) ₹10 (b) ₹30 (c) ₹15 (d) not enough info
31. 31.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
32. 32.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 32 (b) 12 (c) not enough info (d) 36
33. 33.🧩 Kabir bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹35 (c) ₹30 (d) not enough info
34. 34.🧩 Meera is 6 years old. Rohan is older than Meera. How old is Rohan? (a) 7 (b) not enough info (c) 11 (d) 8
35. 35.🧩 Diya is 11 years old. Vihaan is older than Diya. How old is Vihaan? (a) 13 (b) 16 (c) 12 (d) not enough info
36. 36.🧩 A box has 4 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 9 (b) 20 (c) 25 (d) not enough info
37. 37.🧩 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
38. 38.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
39. 39.🧩 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
40. 40.🧩 A box has 6 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 14 (c) 48 (d) 56

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