Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 582 · 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.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
2. 2.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 20 (c) 16 (d) 8
3. 3.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 5 PM
4. 4.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
8. 8.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 36 (b) not enough info (c) 45 (d) 13
9. 9.🧩 Vihaan bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹40 (c) ₹175 (d) not enough info
10. 10.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
11. 11.🧩 Meera bought 4 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹15 (c) ₹40 (d) ₹10
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
13. 13.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
14. 14.🧩 Tara bought 3 kites and a water bottle for ₹205 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹202 (c) ₹205 (d) ₹68
15. 15.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
16. 16.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 2 PM
17. 17.🧩 Diya bought 4 mangoes and a lunch box for ₹220 in all. Each mango cost the same. What did one mango cost? (a) ₹220 (b) ₹55 (c) ₹216 (d) not enough info
18. 18.🧩 Saanvi is 12 years old. Diya is 6 years older than Saanvi. How old is Diya? (a) 19 (b) 18 (c) not enough info (d) 6
19. 19.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
20. 20.🧩 A box has 5 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 40 (b) 48 (c) not enough info (d) 13
21. 21.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) not enough info (b) 10 (c) 5 (d) 50
22. 22.🧩 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
23. 23.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
24. 24.🧩 Kabir bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹35 (d) ₹60
25. 25.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
26. 26.🥭 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
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Rohan bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹65 (c) ₹120 (d) not enough info
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Arjun is 8 years old. Ananya is 3 years older than Arjun. How old is Ananya? (a) 12 (b) not enough info (c) 3 (d) 11
31. 31.🧩 Kabir bought 5 kites and a cap for ₹315 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹63 (c) ₹315 (d) ₹310
32. 32.🧩 Diya bought 2 balls for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹40 (c) ₹80 (d) not enough info
33. 33.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
34. 34.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
35. 35.🧩 Saanvi bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹60 (c) ₹240 (d) ₹65
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
37. 37.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
38. 38.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info
39. 39.🧩 Arjun is 7 years old. Vihaan is 8 years older than Arjun. How old is Vihaan? (a) 8 (b) not enough info (c) 15 (d) 16
40. 40.🧩 A box has 5 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 11 (b) 30 (c) not enough info (d) 36

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