Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 311 · 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) not enough evidence (b) enough evidence
2. 2.🧩 Kabir bought 3 balls and a cap for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹180 (c) ₹177 (d) not enough info
3. 3.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 36 (c) 30 (d) 11
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Aarav is 12 years old. Nisha is 9 years older than Aarav. How old is Nisha? (a) 9 (b) 22 (c) not enough info (d) 21
8. 8.🧩 Tara bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹40 (c) ₹105 (d) not enough info
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
10. 10.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
11. 11.🧩 A box has 4 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 36 (b) 45 (c) 13 (d) not enough info
12. 12.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) not enough info (c) 18 (d) 90
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Ananya is 6 years old. Nisha is older than Ananya. How old is Nisha? (a) not enough info (b) 8 (c) 7 (d) 11
15. 15.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
16. 16.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
18. 18.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 8 PM
19. 19.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 3 PM
20. 20.🧩 Kabir is 11 years old. Ananya is older than Kabir. How old is Ananya? (a) 12 (b) 16 (c) not enough info (d) 13
21. 21.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
22. 22.🧩 Meera bought 6 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹15 (c) ₹20 (d) not enough info
23. 23.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
24. 24.🧩 Aarav bought 4 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹180 (c) not enough info (d) ₹45
25. 25.🧩 Nisha bought 3 mangoes and a water bottle for ₹185 in all. Each mango cost the same. What did one mango cost? (a) ₹61 (b) ₹185 (c) ₹182 (d) not enough info
26. 26.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
27. 27.🧩 A box has 3 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 15 (c) 8 (d) 20
28. 28.🧩 Nisha bought 4 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹45 (c) ₹180 (d) ₹50
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Meera is 11 years old. Aarav is older than Meera. How old is Aarav? (a) 16 (b) 13 (c) not enough info (d) 12
31. 31.🧩 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
32. 32.🧩 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
33. 33.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
35. 35.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
36. 36.🧩 Vihaan is 10 years old. Aarav is older than Vihaan. How old is Aarav? (a) not enough info (b) 15 (c) 11 (d) 12
37. 37.🧩 Meera bought 5 pens and a water bottle for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹175 (b) ₹180 (c) not enough info (d) ₹36
38. 38.🧩 Nisha is 8 years old. Diya is 8 years older than Nisha. How old is Diya? (a) not enough info (b) 17 (c) 8 (d) 16
39. 39.🧩 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
40. 40.🧩 A box has 3 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 11 (b) not enough info (c) 32 (d) 24

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