Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 354 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
3. 3.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
5. 5.🧩 A box has 8 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 36 (c) 12 (d) 32
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.🧩 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
8. 8.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
9. 9.🧩 Rohan bought 5 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹10 (b) not enough info (c) ₹50 (d) ₹15
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
12. 12.🧩 Saanvi bought 4 notebooks and a lunch box for ₹230 in all. Each notebook cost the same. What did one notebook cost? (a) ₹226 (b) ₹230 (c) not enough info (d) ₹57
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
14. 14.🧩 Rohan is 12 years old. Nisha is older than Rohan. How old is Nisha? (a) 17 (b) 14 (c) not enough info (d) 13
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Arjun is 11 years old. Kabir is older than Arjun. How old is Kabir? (a) 12 (b) 16 (c) 13 (d) not enough info
17. 17.🧩 Vihaan bought 6 markers for ₹330 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹330 (c) ₹55 (d) not enough info
18. 18.🧩 Tara is 6 years old. Vihaan is older than Tara. How old is Vihaan? (a) not enough info (b) 11 (c) 7 (d) 8
19. 19.🧩 Aarav bought 2 pens and a lunch box for ₹100 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹100 (c) ₹98 (d) ₹50
20. 20.🥭 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, mangoes match (c) yes, it is certain (d) no, check more
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
22. 22.🧩 Rohan is 7 years old. Aarav is 5 years older than Rohan. How old is Aarav? (a) not enough info (b) 13 (c) 5 (d) 12
23. 23.🧩 Ananya is 12 years old. Arjun is older than Ananya. How old is Arjun? (a) not enough info (b) 17 (c) 13 (d) 14
24. 24.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) not enough info (d) 6 PM
25. 25.🧩 Nisha bought 3 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹90
26. 26.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
28. 28.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 2 PM
29. 29.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Saanvi bought 4 mangoes and a lunch box for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹170 (b) ₹42 (c) ₹166 (d) not enough info
31. 31.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
32. 32.🧩 Vihaan bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹120
33. 33.🧩 Kabir bought 4 pens and a water bottle for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹66 (b) not enough info (c) ₹17 (d) ₹70
34. 34.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Meera bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹15 (c) ₹30 (d) not enough info
36. 36.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) not enough info (b) 90 (c) 9 (d) 18
37. 37.🧩 Saanvi bought 5 mangoes and a bag for ₹245 in all. Each mango cost the same. What did one mango cost? (a) ₹245 (b) ₹240 (c) ₹49 (d) not enough info
38. 38.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
39. 39.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
40. 40.🧩 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

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