Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 324 · 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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
2. 2.🧩 A box has 5 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 20 (b) 24 (c) not enough info (d) 9
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
4. 4.🧩 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
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
6. 6.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
7. 7.🧩 Kabir is 11 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 16 (b) 13 (c) not enough info (d) 12
8. 8.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) not enough info (c) 70 (d) 7
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Rohan is 9 years old. Tara is older than Rohan. How old is Tara? (a) 10 (b) 11 (c) 14 (d) not enough info
12. 12.🧩 Saanvi bought 2 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹90 (b) ₹50 (c) not enough info (d) ₹45
13. 13.🧩 Arjun is 9 years old. Tara is 2 years older than Arjun. How old is Tara? (a) not enough info (b) 12 (c) 11 (d) 2
14. 14.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 7 PM
15. 15.🧩 Aarav bought 4 pens and a bag for ₹220 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) not enough info (c) ₹216 (d) ₹220
16. 16.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
17. 17.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
18. 18.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
19. 19.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Meera is 11 years old. Nisha is older than Meera. How old is Nisha? (a) 12 (b) not enough info (c) 13 (d) 16
22. 22.🧩 Ananya bought 6 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹180 (c) not enough info (d) ₹30
23. 23.🧩 Arjun bought 6 markers for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹45 (c) ₹270 (d) not enough info
24. 24.🧩 Aarav is 11 years old. Ananya is 9 years older than Aarav. How old is Ananya? (a) not enough info (b) 21 (c) 20 (d) 9
25. 25.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 13 (c) 45 (d) 36
26. 26.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
27. 27.🧩 Meera bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹75 (d) ₹30
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
29. 29.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
30. 30.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
31. 31.🧩 Meera is 11 years old. Tara is older than Meera. How old is Tara? (a) 16 (b) 13 (c) 12 (d) not enough info
32. 32.🧩 Ishaan bought 2 mangoes and a water bottle for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹170 (b) ₹85 (c) ₹168 (d) not enough info
33. 33.🧩 Meera bought 6 mangoes and a cap for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹28 (b) ₹164 (c) ₹170 (d) not enough info
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
35. 35.🥭 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) no, check more (d) yes, mangoes match
36. 36.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 6 PM (d) 10 PM
37. 37.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 36 (b) not enough info (c) 12 (d) 27
38. 38.🧩 A box has 8 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 64 (d) 72
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
40. 40.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence

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