Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 943 · 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 measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
2. 2.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
3. 3.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
4. 4.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
5. 5.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 6 PM
6. 6.🧩 Nisha is 8 years old. Tara is older than Nisha. How old is Tara? (a) 13 (b) 10 (c) 9 (d) not enough info
7. 7.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
8. 8.🧩 A box has 4 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 25 (b) not enough info (c) 9 (d) 20
9. 9.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
10. 10.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 30 (c) 25 (d) 10
11. 11.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 2 PM
12. 12.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) 4 PM (d) not enough info
13. 13.🧩 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
14. 14.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
15. 15.🧩 Tara bought 3 pens and a water bottle for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹132 (b) not enough info (c) ₹135 (d) ₹45
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Kabir bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹20 (c) ₹15 (d) not enough info
18. 18.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Ishaan is 12 years old. Tara is 2 years older than Ishaan. How old is Tara? (a) not enough info (b) 14 (c) 15 (d) 2
21. 21.🧩 Kabir is 7 years old. Diya is older than Kabir. How old is Diya? (a) not enough info (b) 8 (c) 9 (d) 12
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Diya bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) not enough info (c) ₹25 (d) ₹30
24. 24.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 7 PM
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
28. 28.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
29. 29.🧩 Ananya bought 2 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) ₹45 (c) not enough info (d) ₹50
30. 30.🧩 Nisha is 7 years old. Aarav is 2 years older than Nisha. How old is Aarav? (a) 2 (b) 9 (c) not enough info (d) 10
31. 31.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Saanvi is 10 years old. Nisha is 7 years older than Saanvi. How old is Nisha? (a) not enough info (b) 7 (c) 18 (d) 17
34. 34.🧩 Aarav bought 3 notebooks and a water bottle for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹180 (c) ₹177 (d) ₹60
35. 35.🧩 Nisha is 7 years old. Vihaan is 5 years older than Nisha. How old is Vihaan? (a) not enough info (b) 13 (c) 5 (d) 12
36. 36.🧩 Nisha bought 6 mangoes and a cap for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹200 (b) ₹33 (c) ₹194 (d) not enough info
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
38. 38.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 28 (c) 10 (d) 21
39. 39.🧩 Diya is 10 years old. Kabir is 4 years older than Diya. How old is Kabir? (a) 4 (b) 15 (c) not enough info (d) 14
40. 40.🧩 Tara bought 3 markers for ₹45 in all. Each marker cost the same. What did one marker cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹45

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