Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 389 · 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 the whole class (c) guessing (d) asking your pet
2. 2.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
3. 3.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Nisha bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹15 (d) ₹20
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
7. 7.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
9. 9.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 10 PM
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
11. 11.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
13. 13.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
14. 14.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Ishaan bought 3 balls and a cap for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹150 (c) ₹147 (d) ₹50
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Nisha bought 2 notebooks and a water bottle for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) not enough info (c) ₹200 (d) ₹198
19. 19.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
20. 20.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
21. 21.🧩 Rohan is 6 years old. Diya is 7 years older than Rohan. How old is Diya? (a) 14 (b) 13 (c) not enough info (d) 7
22. 22.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 42 (c) 13 (d) 48
23. 23.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Ishaan is 6 years old. Aarav is 6 years older than Ishaan. How old is Aarav? (a) not enough info (b) 13 (c) 6 (d) 12
26. 26.🧩 A box has 4 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 11 (b) 35 (c) not enough info (d) 28
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
28. 28.🧩 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
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
30. 30.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
31. 31.🧩 Rohan bought 4 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) ₹20 (c) ₹25 (d) not enough info
32. 32.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
33. 33.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
34. 34.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 8 PM (c) 6 PM (d) not enough info
35. 35.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
36. 36.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 9 (c) 20 (d) 24
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
38. 38.🧩 Meera is 7 years old. Saanvi is older than Meera. How old is Saanvi? (a) not enough info (b) 12 (c) 8 (d) 9
39. 39.🧩 Rohan bought 3 notebooks and a water bottle for ₹125 in all. Each notebook cost the same. What did one notebook cost? (a) ₹125 (b) ₹122 (c) ₹41 (d) not enough info
40. 40.🧩 Arjun bought 2 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) ₹120 (c) ₹60 (d) not enough info

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