Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 81 · 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: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
4. 4.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
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.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) 7 PM (d) not enough info
9. 9.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
10. 10.🧩 Tara bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) not enough info (c) ₹25 (d) ₹30
11. 11.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Aarav is 10 years old. Ananya is older than Aarav. How old is Ananya? (a) not enough info (b) 11 (c) 15 (d) 12
14. 14.🧩 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
15. 15.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
16. 16.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
17. 17.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 5 PM (d) 9 PM
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
21. 21.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Ananya bought 6 pens and a lunch box for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹194 (b) not enough info (c) ₹200 (d) ₹33
24. 24.🧩 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
25. 25.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 24 (b) 10 (c) not enough info (d) 28
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Meera is 7 years old. Arjun is 3 years older than Meera. How old is Arjun? (a) 3 (b) not enough info (c) 11 (d) 10
28. 28.🧩 Nisha bought 2 mangoes and a cap for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹68 (c) ₹70 (d) not enough info
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
30. 30.🧩 Nisha is 6 years old. Ishaan is 6 years older than Nisha. How old is Ishaan? (a) not enough info (b) 6 (c) 13 (d) 12
31. 31.🧩 Nisha bought 5 pens for ₹175 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹40 (c) not enough info (d) ₹175
32. 32.🧩 Tara is 8 years old. Ishaan is older than Tara. How old is Ishaan? (a) not enough info (b) 13 (c) 9 (d) 10
33. 33.🧩 Aarav is 8 years old. Nisha is 3 years older than Aarav. How old is Nisha? (a) not enough info (b) 11 (c) 3 (d) 12
34. 34.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 48 (c) 40 (d) 13
35. 35.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
36. 36.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 35 (c) 30 (d) 11
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
38. 38.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
39. 39.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 11 (b) not enough info (c) 36 (d) 30
40. 40.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True

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