Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 429 · 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? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box has 5 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 35 (c) 42 (d) 12
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Ananya is 12 years old. Ishaan is older than Ananya. How old is Ishaan? (a) 14 (b) 13 (c) not enough info (d) 17
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.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 3 PM
7. 7.🧩 Tara is 7 years old. Saanvi is older than Tara. How old is Saanvi? (a) not enough info (b) 9 (c) 12 (d) 8
8. 8.🧩 A box has 8 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 13 (b) 45 (c) not enough info (d) 40
9. 9.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 4 PM (d) 7 PM
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
13. 13.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 15 (c) 8 (d) 20
14. 14.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
15. 15.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
16. 16.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) no, check more (d) yes, it is certain
17. 17.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
18. 18.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 9 (b) 18 (c) not enough info (d) 90
19. 19.🧩 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
20. 20.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
21. 21.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
22. 22.🧩 Vihaan bought 2 kites for ₹70 in all. Each kite cost the same. What did one kite cost? (a) ₹70 (b) ₹35 (c) not enough info (d) ₹40
23. 23.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
24. 24.🧩 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
25. 25.🧩 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
26. 26.🧩 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
27. 27.🧩 Diya bought 2 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹50 (c) not enough info (d) ₹25
28. 28.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
29. 29.🧩 Aarav bought 2 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹65 (c) ₹120 (d) ₹60
30. 30.🧩 Meera is 10 years old. Vihaan is 4 years older than Meera. How old is Vihaan? (a) 15 (b) 14 (c) not enough info (d) 4
31. 31.🧩 Rohan bought 2 mangoes and a lunch box for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹168 (b) ₹170 (c) ₹85 (d) not enough info
32. 32.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Arjun bought 4 balls and a water bottle for ₹120 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹116 (c) ₹30 (d) ₹120
35. 35.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
36. 36.🧩 Rohan bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹20 (c) ₹15 (d) not enough info
37. 37.🧩 Aarav bought 2 notebooks and a cap for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹170 (c) ₹85 (d) ₹168
38. 38.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 18 (b) not enough info (c) 24 (d) 9
39. 39.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence

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