Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 831 · 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.🧩 Diya bought 6 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹10 (c) ₹60 (d) not enough info
2. 2.🥭 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 mango is sweet (c) yes, mangoes match (d) no, check more
3. 3.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
4. 4.🧩 Diya is 10 years old. Aarav is 6 years older than Diya. How old is Aarav? (a) not enough info (b) 17 (c) 16 (d) 6
5. 5.🧩 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
6. 6.🧩 Diya bought 4 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹100 (b) ₹30 (c) not enough info (d) ₹25
7. 7.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
11. 11.🧩 Aarav is 12 years old. Ananya is older than Aarav. How old is Ananya? (a) 14 (b) 17 (c) 13 (d) not enough info
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
13. 13.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
14. 14.🧩 Meera is 9 years old. Kabir is older than Meera. How old is Kabir? (a) 14 (b) 11 (c) not enough info (d) 10
15. 15.🧩 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
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
18. 18.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 3 PM (d) not enough info
19. 19.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
21. 21.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Meera is 10 years old. Saanvi is 3 years older than Meera. How old is Saanvi? (a) 14 (b) not enough info (c) 13 (d) 3
23. 23.🧩 Rohan is 8 years old. Aarav is 7 years older than Rohan. How old is Aarav? (a) 15 (b) not enough info (c) 7 (d) 16
24. 24.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
25. 25.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
26. 26.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
28. 28.🧩 Diya bought 4 balls and a water bottle for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹180 (b) ₹176 (c) not enough info (d) ₹45
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Meera is 11 years old. Diya is 6 years older than Meera. How old is Diya? (a) 18 (b) not enough info (c) 17 (d) 6
31. 31.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) 48 (b) 13 (c) not enough info (d) 42
32. 32.🧩 A box has 8 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 17 (b) 72 (c) 81 (d) not enough info
33. 33.🧩 Ananya bought 5 pens for ₹75 in all. Each pen cost the same. What did one pen cost? (a) ₹75 (b) not enough info (c) ₹20 (d) ₹15
34. 34.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
35. 35.🧩 Rohan is 10 years old. Diya is 3 years older than Rohan. How old is Diya? (a) 3 (b) not enough info (c) 14 (d) 13
36. 36.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Diya bought 3 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹90 (c) ₹35 (d) not enough info
38. 38.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 6 PM (c) 10 PM (d) not enough info
39. 39.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
40. 40.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

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