Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 541 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
2. 2.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 9 PM (d) 8 PM
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
4. 4.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
5. 5.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) not enough info (b) 18 (c) 9 (d) 24
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
7. 7.🧩 Diya bought 4 notebooks and a cap for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹240 (b) not enough info (c) ₹236 (d) ₹60
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
9. 9.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
10. 10.🧩 Tara bought 5 markers for ₹250 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹50 (c) ₹250 (d) not enough info
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
14. 14.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
15. 15.🧩 Kabir bought 3 notebooks and a cap for ₹220 in all. Each notebook cost the same. What did one notebook cost? (a) ₹73 (b) ₹220 (c) ₹217 (d) not enough info
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Tara bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹240 (b) not enough info (c) ₹65 (d) ₹60
18. 18.🧩 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
19. 19.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 2 PM
20. 20.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
21. 21.🧩 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
22. 22.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
23. 23.🧩 Tara bought 2 kites and a lunch box for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹198 (b) not enough info (c) ₹200 (d) ₹100
24. 24.🧩 Diya bought 5 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) ₹50 (c) not enough info (d) ₹15
25. 25.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
26. 26.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
27. 27.🧩 Kabir bought 2 balls for ₹100 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹55 (c) ₹50 (d) ₹100
28. 28.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no, check more (d) no mango is sweet
29. 29.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
30. 30.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 10 PM
31. 31.🧩 Aarav is 6 years old. Nisha is older than Aarav. How old is Nisha? (a) 8 (b) 11 (c) 7 (d) not enough info
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
33. 33.🧩 A box has 5 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 14 (b) 54 (c) 45 (d) not enough info
34. 34.🧩 Vihaan is 10 years old. Rohan is older than Vihaan. How old is Rohan? (a) 11 (b) 15 (c) not enough info (d) 12
35. 35.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
36. 36.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 30 (b) 36 (c) not enough info (d) 11
37. 37.🧩 Kabir is 8 years old. Nisha is older than Kabir. How old is Nisha? (a) 10 (b) not enough info (c) 9 (d) 13
38. 38.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
39. 39.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
40. 40.🧩 Arjun is 9 years old. Saanvi is older than Arjun. How old is Saanvi? (a) not enough info (b) 11 (c) 10 (d) 14

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