Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 838 · 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? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
2. 2.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
3. 3.🥭 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
4. 4.🧩 Saanvi bought 4 mangoes for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹55 (b) ₹200 (c) not enough info (d) ₹50
5. 5.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
6. 6.🧩 Nisha bought 5 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹150 (c) ₹35 (d) not enough info
7. 7.🧩 Arjun bought 2 notebooks and a cap for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹55 (b) not enough info (c) ₹110 (d) ₹108
8. 8.🧩 Arjun is 10 years old. Meera is older than Arjun. How old is Meera? (a) 15 (b) not enough info (c) 11 (d) 12
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Ananya bought 5 markers and a cap for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹44 (b) ₹220 (c) not enough info (d) ₹215
11. 11.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
12. 12.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
13. 13.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
14. 14.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
16. 16.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
17. 17.🧩 A box has 3 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 9 (b) 24 (c) 18 (d) not enough info
18. 18.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
19. 19.🧩 A box has 6 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 48 (b) 56 (c) 14 (d) not enough info
20. 20.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
21. 21.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 2 PM
22. 22.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 9 PM (c) 10 PM (d) not enough info
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Ananya is 8 years old. Arjun is 9 years older than Ananya. How old is Arjun? (a) 18 (b) 17 (c) 9 (d) not enough info
25. 25.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
26. 26.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
27. 27.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Ananya is 8 years old. Arjun is 2 years older than Ananya. How old is Arjun? (a) 11 (b) not enough info (c) 10 (d) 2
29. 29.🧩 Rohan bought 6 pens for ₹330 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹330 (c) ₹60 (d) ₹55
30. 30.🧩 A box has 6 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 36 (c) 42 (d) 12
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Nisha bought 2 balls and a cap for ₹160 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹160 (c) ₹158 (d) ₹80
33. 33.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
36. 36.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 5 PM
37. 37.🧩 Rohan bought 5 balls for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹25 (c) ₹100 (d) not enough info
38. 38.🧩 Ananya bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹55 (c) not enough info (d) ₹110
39. 39.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
40. 40.🧩 Nisha bought 2 kites and a lunch box for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹90 (b) ₹45 (c) ₹88 (d) not enough info

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