Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 210 · 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? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
4. 4.🧩 Kabir is 6 years old. Rohan is older than Kabir. How old is Rohan? (a) not enough info (b) 7 (c) 11 (d) 8
5. 5.🧩 Rohan bought 4 markers for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹35 (b) not enough info (c) ₹140 (d) ₹40
6. 6.🧩 Ananya bought 4 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) ₹80 (c) ₹20 (d) not enough info
7. 7.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 8 PM (d) 7 PM
8. 8.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
9. 9.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
10. 10.🧩 Aarav bought 2 pens and a lunch box for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹108 (b) not enough info (c) ₹55 (d) ₹110
11. 11.🧩 Saanvi is 8 years old. Vihaan is 2 years older than Saanvi. How old is Vihaan? (a) not enough info (b) 2 (c) 10 (d) 11
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
14. 14.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
15. 15.🧩 Ishaan bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹60 (c) not enough info (d) ₹15
16. 16.🧩 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
17. 17.🧩 Vihaan bought 2 kites and a lunch box for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹78 (c) not enough info (d) ₹80
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
19. 19.🧩 Diya bought 3 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹15 (c) not enough info (d) ₹10
20. 20.🧩 Arjun is 11 years old. Aarav is 4 years older than Arjun. How old is Aarav? (a) 4 (b) 15 (c) not enough info (d) 16
21. 21.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
22. 22.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
23. 23.🧩 A box has 6 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 12 (b) 42 (c) 36 (d) not enough info
24. 24.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
25. 25.🧩 Aarav bought 2 markers and a water bottle for ₹50 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹50 (c) ₹25 (d) ₹48
26. 26.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
27. 27.🧩 Diya bought 2 balls for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹110 (d) ₹55
28. 28.🧩 Saanvi bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹40 (c) not enough info (d) ₹20
29. 29.🧩 Aarav is 10 years old. Kabir is 5 years older than Aarav. How old is Kabir? (a) 5 (b) 15 (c) not enough info (d) 16
30. 30.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
32. 32.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
33. 33.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
34. 34.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 14 (c) 7 (d) 70
35. 35.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
36. 36.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
37. 37.🧩 Arjun is 8 years old. Meera is 8 years older than Arjun. How old is Meera? (a) 16 (b) 8 (c) not enough info (d) 17
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
39. 39.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
40. 40.🧩 Nisha bought 3 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹30

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