Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 934 · 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.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
2. 2.🧩 Aarav is 7 years old. Meera is 8 years older than Aarav. How old is Meera? (a) not enough info (b) 15 (c) 16 (d) 8
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
5. 5.🧩 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
6. 6.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
9. 9.🧩 A box has 3 rows of apples, with 6 in each row. How many apples are in the box? (a) 18 (b) 24 (c) not enough info (d) 9
10. 10.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
11. 11.🧩 Kabir bought 6 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹120
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
13. 13.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
14. 14.🥭 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) no mango is sweet (c) no, check more (d) yes, it is certain
15. 15.🧩 Saanvi is 9 years old. Ananya is older than Saanvi. How old is Ananya? (a) 11 (b) 14 (c) 10 (d) not enough info
16. 16.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
17. 17.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
19. 19.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
20. 20.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
21. 21.🧩 A box has 6 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 54 (c) 63 (d) 15
22. 22.🧩 Ananya is 10 years old. Rohan is older than Ananya. How old is Rohan? (a) 15 (b) not enough info (c) 12 (d) 11
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
25. 25.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
26. 26.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
28. 28.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) 2 PM (d) not enough info
29. 29.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
30. 30.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
31. 31.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
32. 32.🧩 Saanvi is 11 years old. Vihaan is older than Saanvi. How old is Vihaan? (a) 12 (b) 16 (c) 13 (d) not enough info
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
34. 34.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 40 (b) 35 (c) 12 (d) not enough info
35. 35.🧩 A box has 8 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 17 (b) 81 (c) 72 (d) not enough info
36. 36.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 5 PM
37. 37.🧩 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
38. 38.🧩 Saanvi bought 6 pens for ₹270 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹270 (c) not enough info (d) ₹50
39. 39.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Diya bought 5 mangoes and a lunch box for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹26 (b) not enough info (c) ₹130 (d) ₹125

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