Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 915 · 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.🧩 Meera is 11 years old. Diya is older than Meera. How old is Diya? (a) 13 (b) not enough info (c) 12 (d) 16
2. 2.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
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
4. 4.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 9 PM
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
6. 6.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
7. 7.🧩 Ishaan bought 3 notebooks for ₹165 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹55 (c) ₹60 (d) ₹165
8. 8.🥭 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, mangoes match (c) no, check more (d) yes, it is certain
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 4 PM
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.🧩 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
13. 13.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 20 (b) 25 (c) not enough info (d) 9
14. 14.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
15. 15.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
17. 17.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
18. 18.🧩 Kabir bought 3 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) not enough info (c) ₹45 (d) ₹40
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Rohan is 9 years old. Arjun is older than Rohan. How old is Arjun? (a) 11 (b) 14 (c) 10 (d) not enough info
22. 22.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 4 PM (c) 2 PM (d) not enough info
23. 23.🧩 Nisha is 11 years old. Ananya is older than Nisha. How old is Ananya? (a) 16 (b) not enough info (c) 12 (d) 13
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
26. 26.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
27. 27.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
28. 28.🧩 A box has 5 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 35 (b) 42 (c) not enough info (d) 12
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
30. 30.🧩 Tara bought 6 pens and a cap for ₹230 in all. Each pen cost the same. What did one pen cost? (a) ₹38 (b) ₹230 (c) not enough info (d) ₹224
31. 31.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
32. 32.🧩 Meera is 9 years old. Nisha is older than Meera. How old is Nisha? (a) 10 (b) 11 (c) not enough info (d) 14
33. 33.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
34. 34.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
35. 35.🧩 Vihaan is 12 years old. Ananya is 6 years older than Vihaan. How old is Ananya? (a) 19 (b) not enough info (c) 18 (d) 6
36. 36.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
37. 37.🧩 A box has 6 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 42 (b) 13 (c) not enough info (d) 49
38. 38.🧩 Ananya bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹40 (c) ₹25 (d) ₹20
39. 39.🧩 Ananya bought 3 kites for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹165 (b) not enough info (c) ₹55 (d) ₹60
40. 40.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence

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