Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 606 · 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: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
2. 2.🧩 Meera bought 3 notebooks and a cap for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹130 (b) ₹43 (c) not enough info (d) ₹127
3. 3.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
4. 4.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
5. 5.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
6. 6.🧩 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
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
8. 8.🧩 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
9. 9.🧩 Tara bought 6 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) not enough info (c) ₹30 (d) ₹150
10. 10.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 6 PM
11. 11.🧩 Arjun is 9 years old. Ishaan is 7 years older than Arjun. How old is Ishaan? (a) not enough info (b) 7 (c) 16 (d) 17
12. 12.True or false: “One student said the canteen food was cold, so it is always cold.” gives 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) not enough evidence (b) enough evidence
14. 14.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 2 PM
15. 15.🥭 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
16. 16.🧩 Rohan is 9 years old. Arjun is 8 years older than Rohan. How old is Arjun? (a) 8 (b) 17 (c) 18 (d) not enough info
17. 17.🧩 Ishaan bought 4 mangoes and a lunch box for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹130 (b) ₹126 (c) ₹32 (d) not enough info
18. 18.🧩 Arjun bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹35 (c) ₹60 (d) ₹30
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Tara bought 6 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹120 (d) ₹25
21. 21.🧩 Tara is 12 years old. Arjun is older than Tara. How old is Arjun? (a) 14 (b) 13 (c) 17 (d) not enough info
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
23. 23.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 90 (b) 9 (c) not enough info (d) 18
24. 24.🧩 A box has 5 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 30 (b) 25 (c) not enough info (d) 10
25. 25.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
27. 27.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 16 (d) 20
28. 28.🧩 Meera is 9 years old. Ananya is 7 years older than Meera. How old is Ananya? (a) not enough info (b) 16 (c) 17 (d) 7
29. 29.🧩 Meera is 8 years old. Diya is older than Meera. How old is Diya? (a) 13 (b) not enough info (c) 10 (d) 9
30. 30.🧩 Meera bought 5 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹10 (c) not enough info (d) ₹15
31. 31.🧩 Rohan is 6 years old. Kabir is 9 years older than Rohan. How old is Kabir? (a) 9 (b) not enough info (c) 16 (d) 15
32. 32.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 11 (b) 30 (c) 35 (d) not enough info
33. 33.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
34. 34.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
35. 35.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
36. 36.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
37. 37.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) 6 (c) not enough info (d) 12
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
40. 40.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence

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