Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 659 · 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: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
2. 2.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 56 (b) not enough info (c) 49 (d) 14
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
5. 5.🧩 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
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
7. 7.🧩 Kabir bought 3 notebooks and a bag for ₹105 in all. Each notebook cost the same. What did one notebook cost? (a) ₹105 (b) ₹102 (c) not enough info (d) ₹35
8. 8.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
11. 11.🧩 Meera is 8 years old. Kabir is 6 years older than Meera. How old is Kabir? (a) 15 (b) 14 (c) 6 (d) not enough info
12. 12.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
13. 13.🧩 A box has 7 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 15 (b) 56 (c) not enough info (d) 64
14. 14.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Aarav is 12 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 13 (b) 17 (c) 14 (d) not enough info
16. 16.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
18. 18.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
19. 19.🧩 Aarav is 9 years old. Kabir is older than Aarav. How old is Kabir? (a) 11 (b) not enough info (c) 10 (d) 14
20. 20.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) 45 (b) not enough info (c) 13 (d) 40
21. 21.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
22. 22.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
23. 23.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
24. 24.🧩 Kabir bought 2 mangoes and a lunch box for ₹190 in all. Each mango cost the same. What did one mango cost? (a) ₹95 (b) not enough info (c) ₹188 (d) ₹190
25. 25.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
26. 26.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 11 (c) 35 (d) 30
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
28. 28.🧩 A box has 3 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 24 (b) not enough info (c) 11 (d) 32
29. 29.🧩 Saanvi is 11 years old. Kabir is older than Saanvi. How old is Kabir? (a) 16 (b) not enough info (c) 13 (d) 12
30. 30.🧩 Diya bought 6 mangoes and a cap for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹124 (b) not enough info (c) ₹130 (d) ₹21
31. 31.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
32. 32.🧩 Saanvi bought 5 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹300 (c) not enough info (d) ₹65
33. 33.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
34. 34.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
35. 35.🧩 A box has 6 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 12 (b) 42 (c) 36 (d) not enough info
36. 36.🧩 Kabir is 6 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 7 (b) 8 (c) 11 (d) not enough info
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
38. 38.🧩 Kabir bought 4 balls and a lunch box for ₹280 in all. Each ball cost the same. What did one ball cost? (a) ₹280 (b) ₹276 (c) ₹70 (d) not enough info
39. 39.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 15 (c) 8 (d) 20
40. 40.🧩 Ananya is 6 years old. Aarav is 7 years older than Ananya. How old is Aarav? (a) 14 (b) 13 (c) 7 (d) not enough info

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