Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 465 · 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) False (b) True
2. 2.🧩 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
3. 3.🥭 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, it is certain (c) no, check more (d) yes, mangoes match
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Tara is 7 years old. Kabir is older than Tara. How old is Kabir? (a) 8 (b) not enough info (c) 9 (d) 12
6. 6.🧩 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
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
9. 9.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
10. 10.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
11. 11.🧩 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
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
13. 13.🧩 Diya bought 3 pens and a water bottle for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹137 (b) not enough info (c) ₹140 (d) ₹46
14. 14.🧩 Saanvi bought 4 pens for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹160 (b) not enough info (c) ₹40 (d) ₹45
15. 15.🧩 Aarav is 7 years old. Rohan is 5 years older than Aarav. How old is Rohan? (a) 13 (b) not enough info (c) 12 (d) 5
16. 16.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
19. 19.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
20. 20.🧩 Ananya is 12 years old. Saanvi is 7 years older than Ananya. How old is Saanvi? (a) 19 (b) not enough info (c) 20 (d) 7
21. 21.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
22. 22.🧩 A box has 7 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 32 (b) 11 (c) 28 (d) not enough info
23. 23.🧩 Rohan bought 4 notebooks for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹160 (c) ₹45 (d) not enough info
24. 24.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 7 (c) 12 (d) 16
25. 25.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 3 PM
26. 26.🧩 Aarav is 10 years old. Ananya is older than Aarav. How old is Ananya? (a) 11 (b) 12 (c) 15 (d) not enough info
27. 27.🧩 Kabir is 12 years old. Rohan is older than Kabir. How old is Rohan? (a) 13 (b) 14 (c) not enough info (d) 17
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
29. 29.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Tara bought 2 pens and a lunch box for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹75 (b) not enough info (c) ₹148 (d) ₹150
31. 31.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
33. 33.🧩 Kabir bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹90
34. 34.🧩 Ananya bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) not enough info (c) ₹40 (d) ₹20
35. 35.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
36. 36.🧩 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
37. 37.🧩 Nisha bought 3 kites and a lunch box for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹160 (b) ₹157 (c) ₹53 (d) not enough info
38. 38.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
39. 39.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False

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