Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 574 · 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.🧩 Ananya bought 6 markers and a cap for ₹410 in all. Each marker cost the same. What did one marker cost? (a) ₹68 (b) ₹410 (c) ₹404 (d) not enough info
2. 2.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 20 (c) 9 (d) 24
3. 3.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
4. 4.🧩 Aarav is 10 years old. Rohan is older than Aarav. How old is Rohan? (a) not enough info (b) 11 (c) 12 (d) 15
5. 5.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
6. 6.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
7. 7.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
8. 8.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
9. 9.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
10. 10.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Kabir is 11 years old. Meera is 2 years older than Kabir. How old is Meera? (a) 13 (b) not enough info (c) 14 (d) 2
12. 12.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 9 PM
13. 13.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
14. 14.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives 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 your pet (c) asking one friend (d) guessing
17. 17.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Rohan bought 2 mangoes and a lunch box for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹120 (d) ₹118
21. 21.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
22. 22.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
24. 24.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
25. 25.🧩 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
26. 26.🧩 Aarav bought 6 notebooks for ₹270 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹270 (c) ₹50 (d) not enough info
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Ishaan is 6 years old. Vihaan is 3 years older than Ishaan. How old is Vihaan? (a) not enough info (b) 10 (c) 3 (d) 9
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
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) False (b) True
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
32. 32.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 3 PM
33. 33.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
34. 34.🧩 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
35. 35.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
36. 36.🧩 Aarav is 8 years old. Rohan is 4 years older than Aarav. How old is Rohan? (a) not enough info (b) 4 (c) 12 (d) 13
37. 37.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) 50 (c) not enough info (d) 5
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Aarav bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹55 (c) ₹150 (d) ₹50
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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