Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 616 · 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.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
2. 2.🧩 Diya is 11 years old. Ananya is older than Diya. How old is Ananya? (a) 13 (b) 12 (c) not enough info (d) 16
3. 3.🧩 Kabir bought 4 kites and a bag for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹266 (b) ₹67 (c) ₹270 (d) not enough info
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Diya bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹30 (c) ₹120 (d) not enough info
7. 7.🧩 A box has 7 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 64 (b) 56 (c) not enough info (d) 15
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
9. 9.🧩 A box has 6 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 13 (b) 42 (c) 49 (d) not enough info
10. 10.🧩 Aarav is 9 years old. Kabir is older than Aarav. How old is Kabir? (a) 14 (b) 11 (c) 10 (d) not enough info
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Meera is 7 years old. Ananya is 4 years older than Meera. How old is Ananya? (a) 12 (b) not enough info (c) 11 (d) 4
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.🧩 A box has 3 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 9 (b) 24 (c) not enough info (d) 18
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
16. 16.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
17. 17.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
18. 18.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
20. 20.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 8 PM (d) 5 PM
21. 21.🧩 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
22. 22.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
23. 23.🧩 Ishaan bought 5 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹40 (c) ₹200 (d) not enough info
24. 24.🧩 Ananya is 9 years old. Arjun is older than Ananya. How old is Arjun? (a) 10 (b) not enough info (c) 11 (d) 14
25. 25.🧩 Ishaan bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹250 (b) ₹50 (c) ₹55 (d) not enough info
26. 26.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
28. 28.🧩 Aarav bought 3 balls and a lunch box for ₹190 in all. Each ball cost the same. What did one ball cost? (a) ₹187 (b) ₹190 (c) ₹63 (d) not enough info
29. 29.🧩 Tara is 11 years old. Ananya is 2 years older than Tara. How old is Ananya? (a) 2 (b) not enough info (c) 14 (d) 13
30. 30.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
31. 31.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 7 PM (d) 8 PM
32. 32.🧩 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
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
34. 34.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
35. 35.🧩 Nisha bought 6 mangoes and a water bottle for ₹420 in all. Each mango cost the same. What did one mango cost? (a) ₹420 (b) ₹70 (c) not enough info (d) ₹414
36. 36.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
38. 38.🧩 Aarav bought 2 mangoes and a cap for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹65 (b) ₹128 (c) ₹130 (d) not enough info
39. 39.🧩 Kabir bought 4 mangoes and a lunch box for ₹110 in all. Each mango cost the same. What did one mango cost? (a) ₹27 (b) ₹110 (c) not enough info (d) ₹106
40. 40.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence

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