Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 350 · 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.🐕 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
2. 2.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
4. 4.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 2 PM (d) 6 PM
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
6. 6.🧩 Kabir bought 2 notebooks and a cap for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) ₹180 (c) ₹178 (d) not enough info
7. 7.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
8. 8.🥭 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, check more (d) no mango is sweet
9. 9.🧩 Meera bought 5 kites and a cap for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹215 (b) ₹220 (c) not enough info (d) ₹44
10. 10.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
11. 11.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
12. 12.🧩 Kabir bought 5 pens and a cap for ₹270 in all. Each pen cost the same. What did one pen cost? (a) ₹265 (b) ₹54 (c) ₹270 (d) not enough info
13. 13.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
15. 15.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 4 PM (c) 5 PM (d) not enough info
16. 16.📊 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
17. 17.🧩 Tara bought 6 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹120
18. 18.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 3 PM
19. 19.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
20. 20.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
21. 21.🧩 Saanvi is 10 years old. Kabir is older than Saanvi. How old is Kabir? (a) not enough info (b) 12 (c) 11 (d) 15
22. 22.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
23. 23.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 20 (b) 9 (c) 24 (d) not enough info
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Kabir is 11 years old. Arjun is older than Kabir. How old is Arjun? (a) 13 (b) 12 (c) 16 (d) not enough info
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
28. 28.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
29. 29.🧩 Aarav is 7 years old. Kabir is 4 years older than Aarav. How old is Kabir? (a) not enough info (b) 12 (c) 4 (d) 11
30. 30.🧩 Diya bought 2 notebooks and a lunch box for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) ₹60 (c) not enough info (d) ₹118
31. 31.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) not enough info (c) 9 (d) 90
32. 32.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
33. 33.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
34. 34.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
36. 36.🧩 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
37. 37.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
38. 38.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
39. 39.🧩 Vihaan bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹105 (d) ₹40
40. 40.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence

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