Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 542 · 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.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Ananya is 6 years old. Saanvi is 9 years older than Ananya. How old is Saanvi? (a) not enough info (b) 9 (c) 16 (d) 15
5. 5.🥭 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, it is certain (c) yes, mangoes match (d) no, check more
6. 6.🧩 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
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
9. 9.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
10. 10.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
11. 11.🧩 Ishaan bought 6 pens for ₹360 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹360 (c) not enough info (d) ₹60
12. 12.🧩 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
13. 13.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Saanvi is 12 years old. Ishaan is 5 years older than Saanvi. How old is Ishaan? (a) 18 (b) 17 (c) not enough info (d) 5
15. 15.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
17. 17.🧩 Rohan bought 3 kites and a bag for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹87 (c) not enough info (d) ₹90
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Rohan bought 2 notebooks and a water bottle for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹158 (b) ₹80 (c) not enough info (d) ₹160
20. 20.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 5 PM
21. 21.🧩 A box has 7 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 56 (b) not enough info (c) 49 (d) 14
22. 22.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
23. 23.🧩 A box has 5 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) not enough info (b) 42 (c) 35 (d) 12
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
25. 25.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
26. 26.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 3 PM
27. 27.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
28. 28.🧩 Vihaan is 7 years old. Nisha is 7 years older than Vihaan. How old is Nisha? (a) 7 (b) not enough info (c) 15 (d) 14
29. 29.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
30. 30.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
31. 31.🧩 Tara is 7 years old. Vihaan is 8 years older than Tara. How old is Vihaan? (a) 8 (b) 16 (c) not enough info (d) 15
32. 32.🧩 Ishaan is 9 years old. Aarav is 4 years older than Ishaan. How old is Aarav? (a) not enough info (b) 13 (c) 4 (d) 14
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
34. 34.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 8 PM
35. 35.🧩 Vihaan bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) not enough info (c) ₹35 (d) ₹30
36. 36.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
37. 37.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 5 PM (c) 6 PM (d) not enough info
38. 38.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 20 (b) 9 (c) 25 (d) not enough info
40. 40.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM

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