Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 289 · 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: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
4. 4.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
6. 6.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
7. 7.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
8. 8.🧩 Kabir bought 4 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹80
9. 9.🧩 Kabir is 7 years old. Ishaan is older than Kabir. How old is Ishaan? (a) not enough info (b) 12 (c) 8 (d) 9
10. 10.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 6 PM
11. 11.🧩 Ananya is 6 years old. Nisha is 3 years older than Ananya. How old is Nisha? (a) 3 (b) 10 (c) not enough info (d) 9
12. 12.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
13. 13.🧩 Tara is 6 years old. Arjun is older than Tara. How old is Arjun? (a) 11 (b) not enough info (c) 7 (d) 8
14. 14.🧩 A box has 7 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 40 (b) not enough info (c) 12 (d) 35
15. 15.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
16. 16.🧩 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
17. 17.🧩 Diya bought 4 mangoes and a bag for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹180 (c) not enough info (d) ₹176
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
20. 20.🧩 Ananya bought 6 pens and a water bottle for ₹270 in all. Each pen cost the same. What did one pen cost? (a) ₹264 (b) ₹45 (c) ₹270 (d) not enough info
21. 21.🧩 Rohan bought 5 markers for ₹175 in all. Each marker cost the same. What did one marker cost? (a) ₹175 (b) ₹40 (c) ₹35 (d) not enough info
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
24. 24.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) not enough info (d) 7 PM
25. 25.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) not enough info (d) 6 PM
26. 26.🧩 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
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
28. 28.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 5 (c) 10 (d) 50
29. 29.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
30. 30.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
31. 31.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 28 (c) 32 (d) 11
32. 32.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
33. 33.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
34. 34.🧩 Tara bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹60
35. 35.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
36. 36.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
37. 37.🧩 Ananya is 6 years old. Diya is older than Ananya. How old is Diya? (a) 11 (b) 7 (c) not enough info (d) 8
38. 38.🧩 Nisha bought 2 markers and a water bottle for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹90 (b) not enough info (c) ₹45 (d) ₹88
39. 39.🧩 Ishaan is 9 years old. Kabir is older than Ishaan. How old is Kabir? (a) 14 (b) not enough info (c) 10 (d) 11
40. 40.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True

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