Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 605 · 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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
2. 2.🧩 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
3. 3.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
5. 5.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
6. 6.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Rohan bought 5 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹75
9. 9.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
10. 10.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
15. 15.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
16. 16.🧩 Ishaan is 8 years old. Saanvi is 4 years older than Ishaan. How old is Saanvi? (a) 12 (b) 4 (c) not enough info (d) 13
17. 17.🧩 Meera bought 6 notebooks and a lunch box for ₹340 in all. Each notebook cost the same. What did one notebook cost? (a) ₹56 (b) ₹334 (c) ₹340 (d) not enough info
18. 18.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 13 (b) 48 (c) not enough info (d) 42
19. 19.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
20. 20.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
22. 22.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
23. 23.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) not enough info (d) 6 PM
24. 24.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 36 (d) 32
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
27. 27.🧩 A box has 4 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 35 (b) 28 (c) not enough info (d) 11
28. 28.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 28 (c) 10 (d) 21
29. 29.🧩 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
30. 30.🧩 Meera bought 6 markers and a cap for ₹170 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹28 (c) ₹170 (d) ₹164
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 4 PM (d) 6 PM
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
36. 36.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 18 (c) not enough info (d) 90
37. 37.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
38. 38.🧩 Nisha bought 5 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) ₹300 (c) not enough info (d) ₹60
39. 39.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
40. 40.🧩 Vihaan bought 3 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹50 (c) ₹55 (d) ₹150

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