Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 776 · 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.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
3. 3.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 5 PM
4. 4.🧩 Arjun bought 5 balls and a water bottle for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹300 (b) ₹295 (c) not enough info (d) ₹60
5. 5.🧩 Tara bought 2 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) not enough info (c) ₹55 (d) ₹50
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
7. 7.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
8. 8.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 16 (d) 80
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
10. 10.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
11. 11.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) 4 PM (d) not enough info
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
13. 13.🧩 Nisha bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) ₹55 (b) ₹275 (c) not enough info (d) ₹60
14. 14.🧩 A box has 6 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 42 (b) not enough info (c) 13 (d) 49
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
16. 16.🧩 Ishaan bought 3 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹10 (b) ₹30 (c) not enough info (d) ₹15
17. 17.🧩 Saanvi is 9 years old. Kabir is older than Saanvi. How old is Kabir? (a) 14 (b) not enough info (c) 10 (d) 11
18. 18.🧩 Meera is 12 years old. Rohan is 7 years older than Meera. How old is Rohan? (a) not enough info (b) 20 (c) 19 (d) 7
19. 19.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
21. 21.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Arjun bought 3 kites for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹165 (b) ₹60 (c) not enough info (d) ₹55
23. 23.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
24. 24.🧩 Rohan bought 3 pens and a lunch box for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹87 (b) ₹90 (c) ₹30 (d) not enough info
25. 25.🧩 Kabir is 10 years old. Tara is 6 years older than Kabir. How old is Tara? (a) 6 (b) not enough info (c) 17 (d) 16
26. 26.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 35 (b) not enough info (c) 11 (d) 28
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
29. 29.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info
30. 30.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
31. 31.🧩 Tara is 11 years old. Meera is older than Tara. How old is Meera? (a) 12 (b) 13 (c) 16 (d) not enough info
32. 32.🧩 Diya bought 2 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹50 (c) ₹100 (d) ₹55
33. 33.🧩 Vihaan is 8 years old. Ishaan is older than Vihaan. How old is Ishaan? (a) 9 (b) 10 (c) not enough info (d) 13
34. 34.🧩 A box has 4 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 32 (b) 12 (c) 40 (d) not enough info
35. 35.🧩 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
36. 36.🧩 Meera is 9 years old. Tara is older than Meera. How old is Tara? (a) 10 (b) 14 (c) not enough info (d) 11
37. 37.🧩 Tara is 6 years old. Diya is older than Tara. How old is Diya? (a) 8 (b) 7 (c) 11 (d) not enough info
38. 38.🧩 Vihaan bought 5 kites for ₹125 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹25 (d) ₹125
39. 39.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
40. 40.🧩 A box has 7 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 56 (b) 49 (c) 14 (d) not enough info

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