Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 327 · 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.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
3. 3.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
4. 4.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
5. 5.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 4 PM
6. 6.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
7. 7.🧩 Diya bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹20 (d) ₹25
8. 8.🧩 A box has 5 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 9 (b) 24 (c) not enough info (d) 20
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Rohan is 9 years old. Saanvi is 8 years older than Rohan. How old is Saanvi? (a) 17 (b) 18 (c) not enough info (d) 8
11. 11.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) not enough info (d) 4 PM
12. 12.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) 8 (c) not enough info (d) 16
13. 13.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
14. 14.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
15. 15.🧩 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
16. 16.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 9 PM (c) 8 PM (d) 6 PM
17. 17.🧩 Ananya is 6 years old. Tara is 2 years older than Ananya. How old is Tara? (a) not enough info (b) 8 (c) 9 (d) 2
18. 18.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
19. 19.🧩 Arjun bought 6 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹30 (c) not enough info (d) ₹180
20. 20.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
22. 22.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
23. 23.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 16 (b) 63 (c) not enough info (d) 72
24. 24.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
26. 26.🧩 Diya is 6 years old. Rohan is 8 years older than Diya. How old is Rohan? (a) 15 (b) 14 (c) not enough info (d) 8
27. 27.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 4 PM
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
29. 29.🧩 A box has 3 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 21 (b) 10 (c) not enough info (d) 28
30. 30.🧩 Rohan is 7 years old. Ananya is older than Rohan. How old is Ananya? (a) not enough info (b) 9 (c) 12 (d) 8
31. 31.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 2 PM
32. 32.🧩 Meera is 12 years old. Tara is 8 years older than Meera. How old is Tara? (a) 20 (b) 8 (c) not enough info (d) 21
33. 33.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
34. 34.🧩 Nisha is 12 years old. Vihaan is 5 years older than Nisha. How old is Vihaan? (a) 17 (b) 5 (c) not enough info (d) 18
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
36. 36.🧩 Diya is 12 years old. Aarav is older than Diya. How old is Aarav? (a) 14 (b) not enough info (c) 17 (d) 13
37. 37.🧩 Diya bought 4 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹60
38. 38.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Ishaan bought 5 notebooks for ₹275 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹55 (c) ₹275 (d) not enough info

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