Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 107 · 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: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
3. 3.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
4. 4.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 6 PM
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
6. 6.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
7. 7.🧩 Nisha is 7 years old. Kabir is older than Nisha. How old is Kabir? (a) 8 (b) 12 (c) not enough info (d) 9
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
13. 13.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Ananya bought 5 notebooks and a cap for ₹195 in all. Each notebook cost the same. What did one notebook cost? (a) ₹190 (b) ₹39 (c) ₹195 (d) not enough info
15. 15.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
16. 16.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info
17. 17.🧩 A box has 5 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 10 (c) 30 (d) 25
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
19. 19.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
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.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 7 PM (d) 6 PM
22. 22.🐕 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
23. 23.🧩 Saanvi is 7 years old. Vihaan is 8 years older than Saanvi. How old is Vihaan? (a) 16 (b) 15 (c) 8 (d) not enough info
24. 24.🧩 Arjun is 12 years old. Meera is 2 years older than Arjun. How old is Meera? (a) 2 (b) 14 (c) not enough info (d) 15
25. 25.🧩 A box has 5 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 13 (b) not enough info (c) 48 (d) 40
26. 26.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
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
28. 28.🧩 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
29. 29.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 10 (c) 28 (d) 24
30. 30.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
31. 31.🧩 A box has 8 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 13 (b) not enough info (c) 45 (d) 40
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
33. 33.🧩 Ananya is 7 years old. Arjun is older than Ananya. How old is Arjun? (a) 12 (b) not enough info (c) 8 (d) 9
34. 34.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Arjun is 10 years old. Nisha is 3 years older than Arjun. How old is Nisha? (a) 13 (b) 14 (c) 3 (d) not enough info
37. 37.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
38. 38.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box has 6 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 63 (b) 15 (c) 54 (d) not enough info
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True

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