Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 14 · 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 tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
2. 2.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 9 PM
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.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
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
6. 6.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
7. 7.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Saanvi is 8 years old. Ishaan is 6 years older than Saanvi. How old is Ishaan? (a) not enough info (b) 15 (c) 14 (d) 6
9. 9.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
10. 10.🧩 Saanvi is 8 years old. Meera is 4 years older than Saanvi. How old is Meera? (a) 12 (b) not enough info (c) 13 (d) 4
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Saanvi bought 4 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹45 (c) not enough info (d) ₹180
13. 13.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 3 PM (d) 4 PM
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) never see dogs (d) dogs hate you
15. 15.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
16. 16.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
17. 17.🧩 Meera is 11 years old. Kabir is 5 years older than Meera. How old is Kabir? (a) 5 (b) 17 (c) not enough info (d) 16
18. 18.🧩 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
19. 19.🧩 Meera bought 6 mangoes and a cap for ₹100 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹100 (c) ₹94 (d) ₹16
20. 20.🧩 Kabir is 6 years old. Ishaan is 8 years older than Kabir. How old is Ishaan? (a) not enough info (b) 15 (c) 14 (d) 8
21. 21.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Nisha is 9 years old. Meera is older than Nisha. How old is Meera? (a) 11 (b) 10 (c) not enough info (d) 14
24. 24.🧩 Meera is 7 years old. Arjun is older than Meera. How old is Arjun? (a) not enough info (b) 9 (c) 8 (d) 12
25. 25.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) not enough info (b) 6 (c) 12 (d) 60
26. 26.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
27. 27.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
28. 28.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 5 PM (c) 2 PM (d) not enough info
29. 29.🧩 A box has 3 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 10 (c) 21 (d) 28
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
31. 31.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 20 (c) 9 (d) 24
32. 32.🧩 Meera bought 6 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹240 (c) not enough info (d) ₹40
33. 33.🧩 Kabir is 10 years old. Aarav is older than Kabir. How old is Aarav? (a) 11 (b) 15 (c) not enough info (d) 12
34. 34.🧩 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
35. 35.🧩 Meera is 10 years old. Saanvi is older than Meera. How old is Saanvi? (a) 12 (b) not enough info (c) 11 (d) 15
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
37. 37.🧩 Saanvi is 6 years old. Arjun is older than Saanvi. How old is Arjun? (a) 7 (b) not enough info (c) 11 (d) 8
38. 38.🧩 Rohan is 7 years old. Vihaan is 7 years older than Rohan. How old is Vihaan? (a) 7 (b) not enough info (c) 15 (d) 14
39. 39.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
40. 40.🧩 A box has 6 rows of guavas, with 6 in each row. How many guavas are in the box? (a) not enough info (b) 42 (c) 36 (d) 12

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