Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 862 · 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.🧩 Aarav bought 2 balls and a lunch box for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹30 (c) not enough info (d) ₹58
3. 3.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 4 PM
4. 4.🧩 Tara is 10 years old. Ananya is 5 years older than Tara. How old is Ananya? (a) 16 (b) not enough info (c) 15 (d) 5
5. 5.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
6. 6.🧩 Diya bought 5 balls and a water bottle for ₹105 in all. Each ball cost the same. What did one ball cost? (a) ₹21 (b) ₹105 (c) not enough info (d) ₹100
7. 7.🧩 Ananya bought 2 notebooks and a lunch box for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) ₹200 (c) ₹198 (d) not enough info
8. 8.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
9. 9.🧩 Arjun bought 4 markers and a cap for ₹250 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹62 (c) ₹246 (d) ₹250
10. 10.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
11. 11.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
12. 12.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
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
14. 14.🥭 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) no, check more (c) no mango is sweet (d) yes, mangoes match
15. 15.🧩 Nisha is 8 years old. Rohan is 8 years older than Nisha. How old is Rohan? (a) 8 (b) 17 (c) not enough info (d) 16
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
17. 17.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
18. 18.🧩 Aarav bought 3 markers for ₹105 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹105
19. 19.🧩 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
20. 20.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 14 (c) 7 (d) not enough info
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
22. 22.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
24. 24.🧩 Ishaan bought 5 kites for ₹175 in all. Each kite cost the same. What did one kite cost? (a) ₹175 (b) ₹35 (c) ₹40 (d) not enough info
25. 25.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
26. 26.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
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
30. 30.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
31. 31.🧩 A box has 7 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 48 (b) 42 (c) not enough info (d) 13
32. 32.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
33. 33.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) not enough info (b) 6 (c) 12 (d) 60
34. 34.🧩 Diya bought 4 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹60
35. 35.🧩 Ishaan bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹250 (b) ₹55 (c) not enough info (d) ₹50
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
37. 37.🧩 A box has 4 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 9 (b) not enough info (c) 25 (d) 20
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Saanvi bought 2 markers for ₹20 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹10 (c) ₹15 (d) ₹20
40. 40.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True

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