Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 696 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
2. 2.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) not enough info (c) 18 (d) 90
3. 3.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
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.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
6. 6.🧩 Vihaan bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹70
7. 7.🧩 Aarav bought 6 notebooks and a bag for ₹340 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹340 (c) ₹334 (d) ₹56
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
10. 10.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
11. 11.🧩 A box has 6 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 36 (b) 12 (c) 42 (d) not enough info
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
13. 13.🧩 Ishaan bought 5 balls and a cap for ₹170 in all. Each ball cost the same. What did one ball cost? (a) ₹34 (b) not enough info (c) ₹165 (d) ₹170
14. 14.🧩 Tara bought 5 pens for ₹225 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹225 (c) not enough info (d) ₹50
15. 15.🧩 Kabir is 7 years old. Aarav is older than Kabir. How old is Aarav? (a) 9 (b) 8 (c) not enough info (d) 12
16. 16.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
17. 17.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
18. 18.🧩 Saanvi bought 5 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) ₹100 (c) not enough info (d) ₹20
19. 19.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
20. 20.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
21. 21.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
22. 22.🧩 Diya bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹110 (b) not enough info (c) ₹55 (d) ₹60
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.🧩 Saanvi bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) not enough info (c) ₹25 (d) ₹50
25. 25.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
26. 26.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
27. 27.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
28. 28.🧩 Tara is 12 years old. Rohan is older than Tara. How old is Rohan? (a) 17 (b) 14 (c) not enough info (d) 13
29. 29.🧩 Kabir is 8 years old. Ananya is older than Kabir. How old is Ananya? (a) 10 (b) 13 (c) not enough info (d) 9
30. 30.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
31. 31.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 6 PM (c) 9 PM (d) not enough info
32. 32.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
33. 33.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 36 (b) 30 (c) 11 (d) not enough info
34. 34.🧩 A box has 4 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 8 (b) 20 (c) not enough info (d) 16
35. 35.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
36. 36.🧩 Diya is 6 years old. Ananya is 7 years older than Diya. How old is Ananya? (a) 7 (b) 14 (c) not enough info (d) 13
37. 37.🥭 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) yes, it is certain (c) no, check more (d) no mango is sweet
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
39. 39.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
40. 40.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False

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