Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 251 · 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) not enough evidence (b) enough evidence
2. 2.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
4. 4.🧩 A box has 4 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 9 (b) 25 (c) 20 (d) not enough info
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
6. 6.🧩 Kabir bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹35 (c) ₹30 (d) not enough info
7. 7.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
8. 8.🧩 Kabir bought 3 pens for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹165 (b) not enough info (c) ₹55 (d) ₹60
9. 9.🧩 Kabir is 12 years old. Rohan is older than Kabir. How old is Rohan? (a) 14 (b) 13 (c) not enough info (d) 17
10. 10.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 6 (d) 60
11. 11.🧩 Saanvi bought 4 notebooks and a cap for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) not enough info (c) ₹180 (d) ₹176
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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
14. 14.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
15. 15.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
16. 16.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
19. 19.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
20. 20.🧩 Ananya bought 4 balls and a cap for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹32 (b) ₹126 (c) ₹130 (d) not enough info
21. 21.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Aarav bought 2 kites and a water bottle for ₹100 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹98 (c) ₹50 (d) ₹100
23. 23.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
26. 26.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
27. 27.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
29. 29.🧩 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
30. 30.🧩 Aarav bought 3 balls for ₹135 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹50 (c) not enough info (d) ₹135
31. 31.🧩 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
32. 32.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
33. 33.🧩 Arjun is 10 years old. Ananya is 8 years older than Arjun. How old is Ananya? (a) 19 (b) not enough info (c) 8 (d) 18
34. 34.🥭 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) no, check more (c) yes, it is certain (d) no mango is sweet
35. 35.🧩 A box has 8 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 40 (b) not enough info (c) 45 (d) 13
36. 36.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
37. 37.🧩 Diya bought 5 kites and a cap for ₹190 in all. Each kite cost the same. What did one kite cost? (a) ₹190 (b) ₹185 (c) ₹38 (d) not enough info
38. 38.🧩 Aarav bought 2 notebooks and a lunch box for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹70 (b) ₹138 (c) ₹140 (d) not enough info
39. 39.🧩 Ananya bought 4 kites for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹140
40. 40.🧩 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

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