Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 584 · 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.🧩 A box has 5 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 45 (b) not enough info (c) 14 (d) 54
2. 2.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
3. 3.🧩 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
4. 4.🧩 A box has 7 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 72 (b) 16 (c) not enough info (d) 63
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
7. 7.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
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.🧩 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
10. 10.🧩 Vihaan is 11 years old. Ananya is 2 years older than Vihaan. How old is Ananya? (a) 14 (b) 2 (c) not enough info (d) 13
11. 11.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
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.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
14. 14.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 20 (b) not enough info (c) 15 (d) 8
15. 15.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 24 (b) 10 (c) not enough info (d) 28
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
17. 17.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
19. 19.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Aarav bought 5 pens and a water bottle for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹33 (b) ₹165 (c) ₹160 (d) not enough info
24. 24.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) 8 (b) 20 (c) not enough info (d) 16
25. 25.🧩 Rohan bought 3 kites and a cap for ₹145 in all. Each kite cost the same. What did one kite cost? (a) ₹142 (b) not enough info (c) ₹145 (d) ₹48
26. 26.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
27. 27.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
28. 28.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) not enough info (b) 45 (c) 36 (d) 13
29. 29.🧩 Tara bought 6 balls and a cap for ₹340 in all. Each ball cost the same. What did one ball cost? (a) ₹340 (b) ₹334 (c) not enough info (d) ₹56
30. 30.🧩 A box has 5 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 40 (b) not enough info (c) 13 (d) 48
31. 31.🧩 Tara bought 3 markers and a cap for ₹185 in all. Each marker cost the same. What did one marker cost? (a) ₹61 (b) ₹182 (c) ₹185 (d) not enough info
32. 32.🧩 Aarav bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹20
33. 33.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
34. 34.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 24 (b) 9 (c) 20 (d) not enough info
35. 35.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) not enough info (b) 48 (c) 14 (d) 54
36. 36.🧩 Nisha bought 3 markers for ₹75 in all. Each marker cost the same. What did one marker cost? (a) ₹75 (b) ₹30 (c) not enough info (d) ₹25
37. 37.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Kabir bought 5 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) not enough info (c) ₹15 (d) ₹10
39. 39.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 9 PM (d) not enough info
40. 40.🧩 Meera bought 4 pens and a cap for ₹230 in all. Each pen cost the same. What did one pen cost? (a) ₹57 (b) ₹230 (c) not enough info (d) ₹226

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