Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 300 · 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.🧩 Saanvi is 8 years old. Ananya is 8 years older than Saanvi. How old is Ananya? (a) not enough info (b) 16 (c) 8 (d) 17
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, check more (c) no mango is sweet (d) yes, mangoes match
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
4. 4.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
5. 5.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
6. 6.🧩 Nisha is 8 years old. Diya is older than Nisha. How old is Diya? (a) 9 (b) 10 (c) not enough info (d) 13
7. 7.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
8. 8.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
9. 9.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
12. 12.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
13. 13.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
14. 14.🧩 Vihaan is 10 years old. Ananya is older than Vihaan. How old is Ananya? (a) 11 (b) 12 (c) 15 (d) not enough info
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Tara bought 5 markers and a bag for ₹155 in all. Each marker cost the same. What did one marker cost? (a) ₹155 (b) ₹150 (c) ₹31 (d) not enough info
17. 17.🧩 Ishaan is 6 years old. Meera is 6 years older than Ishaan. How old is Meera? (a) 6 (b) not enough info (c) 12 (d) 13
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
19. 19.🧩 Nisha bought 3 mangoes and a cap for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹46 (b) ₹137 (c) ₹140 (d) not enough info
20. 20.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
21. 21.🧩 Aarav bought 3 markers and a lunch box for ₹165 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹55 (c) ₹162 (d) ₹165
22. 22.🧩 Tara bought 5 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹150
23. 23.🧩 A box has 3 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 24 (c) 18 (d) 9
24. 24.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) 7 PM (d) not enough info
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
28. 28.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 5 PM
29. 29.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
30. 30.🧩 Ishaan bought 6 pens and a cap for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹41 (b) ₹244 (c) not enough info (d) ₹250
31. 31.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
32. 32.🧩 Ishaan bought 3 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹10 (c) ₹15 (d) not enough info
33. 33.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 2 PM (d) 4 PM
34. 34.🧩 Aarav bought 3 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹65 (c) ₹180 (d) not enough info
35. 35.🧩 Diya is 8 years old. Meera is older than Diya. How old is Meera? (a) not enough info (b) 10 (c) 13 (d) 9
36. 36.🧩 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
37. 37.🧩 Aarav is 6 years old. Diya is 2 years older than Aarav. How old is Diya? (a) not enough info (b) 9 (c) 8 (d) 2
38. 38.🧩 Ananya bought 5 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹15 (c) ₹50 (d) ₹10
39. 39.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 9 PM
40. 40.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False

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