Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 948 · 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.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 10 PM (c) not enough info (d) 6 PM
3. 3.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) 4 PM (d) not enough info
4. 4.🧩 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
5. 5.🧩 Vihaan bought 6 notebooks and a cap for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹174 (c) ₹30 (d) ₹180
6. 6.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
7. 7.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
9. 9.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 5 PM
10. 10.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Kabir is 11 years old. Arjun is 9 years older than Kabir. How old is Arjun? (a) 9 (b) not enough info (c) 21 (d) 20
13. 13.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
14. 14.🧩 Arjun bought 4 notebooks and a water bottle for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹66 (b) ₹70 (c) ₹17 (d) not enough info
15. 15.🧩 Aarav is 7 years old. Nisha is 7 years older than Aarav. How old is Nisha? (a) 7 (b) 15 (c) not enough info (d) 14
16. 16.🧩 Vihaan bought 2 notebooks and a lunch box for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹138 (c) ₹140 (d) ₹70
17. 17.🧩 Saanvi bought 2 notebooks and a bag for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹148 (c) ₹150 (d) ₹75
18. 18.🧩 A box has 3 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 36 (b) not enough info (c) 27 (d) 12
19. 19.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
20. 20.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
21. 21.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 72 (b) not enough info (c) 16 (d) 63
22. 22.📊 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
23. 23.🧩 Meera bought 4 markers and a bag for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹216 (b) ₹220 (c) ₹55 (d) not enough info
24. 24.🧩 Meera bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹35 (c) not enough info (d) ₹120
25. 25.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 7 PM (c) 8 PM (d) not enough info
26. 26.🧩 Nisha is 6 years old. Ishaan is 4 years older than Nisha. How old is Ishaan? (a) 11 (b) not enough info (c) 10 (d) 4
27. 27.🧩 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
28. 28.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
29. 29.🧩 Ananya bought 4 notebooks and a water bottle for ₹260 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹260 (c) ₹65 (d) ₹256
30. 30.🧩 Kabir bought 3 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹60
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
32. 32.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 32 (c) 36 (d) 12
33. 33.🧩 A box has 4 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 25 (c) 9 (d) 20
34. 34.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
35. 35.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) 6 PM (d) not enough info
36. 36.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
39. 39.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
40. 40.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) not enough info (b) 7 (c) 70 (d) 14

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