Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 922 · 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.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
3. 3.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 36 (b) not enough info (c) 11 (d) 30
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
5. 5.🧩 Rohan bought 4 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) not enough info (c) ₹35 (d) ₹120
6. 6.🧩 A box has 5 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 14 (b) not enough info (c) 45 (d) 54
7. 7.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 7 PM (c) 8 PM (d) not enough info
8. 8.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
9. 9.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
10. 10.🧩 Kabir bought 6 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹120 (b) not enough info (c) ₹20 (d) ₹25
11. 11.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
12. 12.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
13. 13.🥭 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
14. 14.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Nisha is 7 years old. Ishaan is older than Nisha. How old is Ishaan? (a) 8 (b) 12 (c) not enough info (d) 9
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
17. 17.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
18. 18.🧩 Ishaan bought 6 notebooks for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹360 (c) ₹60 (d) ₹65
19. 19.🧩 A box has 6 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 63 (b) 54 (c) 15 (d) not enough info
20. 20.🧩 Kabir bought 3 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹90 (c) ₹30 (d) not enough info
21. 21.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 5 PM
22. 22.🧩 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
23. 23.🧩 Diya is 11 years old. Meera is 8 years older than Diya. How old is Meera? (a) 20 (b) 8 (c) 19 (d) not enough info
24. 24.🧩 Ishaan is 6 years old. Diya is older than Ishaan. How old is Diya? (a) 8 (b) not enough info (c) 7 (d) 11
25. 25.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
26. 26.🧩 A box has 7 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 32 (c) 28 (d) 11
27. 27.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 9 (c) 18 (d) 24
28. 28.🧩 Ananya bought 3 pens and a bag for ₹185 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹182 (c) ₹61 (d) ₹185
29. 29.🧩 Rohan bought 3 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹120 (b) not enough info (c) ₹45 (d) ₹40
30. 30.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
31. 31.🧩 Tara is 11 years old. Ananya is 6 years older than Tara. How old is Ananya? (a) 18 (b) not enough info (c) 6 (d) 17
32. 32.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
33. 33.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
34. 34.🧩 A box has 4 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 10 (b) 30 (c) 24 (d) not enough info
35. 35.🧩 Ananya bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹150
36. 36.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
37. 37.🧩 Aarav is 12 years old. Ananya is 2 years older than Aarav. How old is Ananya? (a) 15 (b) 14 (c) 2 (d) not enough info
38. 38.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
39. 39.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
40. 40.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number

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