Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 69 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
3. 3.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 49 (b) 56 (c) 14 (d) not enough info
4. 4.🧩 Tara bought 4 balls and a lunch box for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) not enough info (c) ₹180 (d) ₹176
5. 5.🧩 Saanvi is 10 years old. Vihaan is 3 years older than Saanvi. How old is Vihaan? (a) not enough info (b) 14 (c) 3 (d) 13
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
7. 7.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 5 PM (d) 9 PM
8. 8.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Meera bought 6 kites and a water bottle for ₹190 in all. Each kite cost the same. What did one kite cost? (a) ₹31 (b) ₹190 (c) ₹184 (d) not enough info
11. 11.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
12. 12.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Saanvi bought 4 balls and a cap for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹86 (b) ₹22 (c) not enough info (d) ₹90
14. 14.🧩 Diya bought 6 pens and a cap for ₹390 in all. Each pen cost the same. What did one pen cost? (a) ₹384 (b) ₹65 (c) ₹390 (d) not enough info
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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
17. 17.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
18. 18.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) not enough info (c) 5 PM (d) 4 PM
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
20. 20.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
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Vihaan is 10 years old. Nisha is 8 years older than Vihaan. How old is Nisha? (a) not enough info (b) 18 (c) 19 (d) 8
23. 23.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
24. 24.🧩 A box has 8 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 54 (c) 48 (d) 14
25. 25.🧩 A box has 7 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 11 (c) 32 (d) 28
26. 26.🧩 A box has 5 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 36 (b) not enough info (c) 30 (d) 11
27. 27.🧩 Arjun bought 4 kites and a cap for ₹230 in all. Each kite cost the same. What did one kite cost? (a) ₹57 (b) ₹226 (c) ₹230 (d) not enough info
28. 28.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
29. 29.🧩 A box has 5 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 13 (c) 48 (d) 40
30. 30.🧩 A box has 3 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) not enough info (b) 24 (c) 18 (d) 9
31. 31.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) no mango is sweet (d) yes, mangoes match
32. 32.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Vihaan is 8 years old. Meera is 8 years older than Vihaan. How old is Meera? (a) not enough info (b) 8 (c) 16 (d) 17
34. 34.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
35. 35.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
36. 36.🧩 Saanvi is 10 years old. Kabir is older than Saanvi. How old is Kabir? (a) 11 (b) 15 (c) not enough info (d) 12
37. 37.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
38. 38.🧩 A box has 4 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 30 (b) 10 (c) not enough info (d) 24
39. 39.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 35 (b) 30 (c) 11 (d) not enough info
40. 40.🧩 Nisha is 12 years old. Ishaan is 2 years older than Nisha. How old is Ishaan? (a) 2 (b) 15 (c) 14 (d) not enough info

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