Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 500 · 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.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
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.🧩 Kabir bought 6 balls and a bag for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹194 (b) ₹33 (c) ₹200 (d) not enough info
4. 4.🧩 A box has 8 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 36 (c) 12 (d) 32
5. 5.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Diya bought 5 balls and a bag for ₹140 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹135 (c) ₹28 (d) ₹140
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Vihaan is 9 years old. Saanvi is 3 years older than Vihaan. How old is Saanvi? (a) not enough info (b) 13 (c) 12 (d) 3
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
10. 10.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
12. 12.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Tara bought 6 mangoes and a bag for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹300 (b) ₹50 (c) not enough info (d) ₹294
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
16. 16.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
17. 17.🧩 Ishaan is 10 years old. Meera is older than Ishaan. How old is Meera? (a) not enough info (b) 12 (c) 15 (d) 11
18. 18.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 70 (b) 7 (c) 14 (d) not enough info
19. 19.🧩 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
20. 20.🧩 Vihaan is 10 years old. Arjun is older than Vihaan. How old is Arjun? (a) 15 (b) 11 (c) 12 (d) not enough info
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Nisha bought 3 kites and a cap for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹150 (c) ₹147 (d) not enough info
23. 23.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
24. 24.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
25. 25.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) not enough info (d) 4 PM
26. 26.🧩 Meera is 7 years old. Aarav is 4 years older than Meera. How old is Aarav? (a) 12 (b) not enough info (c) 11 (d) 4
27. 27.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
29. 29.🧩 Saanvi is 6 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 7 (b) not enough info (c) 8 (d) 11
30. 30.🧩 Ananya is 12 years old. Diya is older than Ananya. How old is Diya? (a) 14 (b) not enough info (c) 17 (d) 13
31. 31.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) no mango is sweet (d) yes, mangoes match
32. 32.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
33. 33.🧩 Saanvi bought 6 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) not enough info (c) ₹30 (d) ₹150
34. 34.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
35. 35.🧩 Rohan is 8 years old. Ananya is 9 years older than Rohan. How old is Ananya? (a) 9 (b) 17 (c) 18 (d) not enough info
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
37. 37.🧩 Arjun bought 6 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) ₹55 (b) not enough info (c) ₹50 (d) ₹300
38. 38.🧩 Meera is 6 years old. Aarav is 9 years older than Meera. How old is Aarav? (a) 16 (b) not enough info (c) 9 (d) 15
39. 39.🧩 Tara bought 3 pens for ₹165 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹55 (c) ₹165 (d) ₹60
40. 40.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True

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