Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 573 · 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 tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Tara bought 2 notebooks for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹110 (c) ₹60 (d) ₹55
3. 3.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
4. 4.🧩 Vihaan is 10 years old. Aarav is older than Vihaan. How old is Aarav? (a) not enough info (b) 15 (c) 12 (d) 11
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
6. 6.🧩 Kabir bought 5 notebooks and a bag for ₹255 in all. Each notebook cost the same. What did one notebook cost? (a) ₹255 (b) not enough info (c) ₹51 (d) ₹250
7. 7.🧩 Kabir bought 3 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹120 (c) not enough info (d) ₹40
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
9. 9.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
10. 10.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
12. 12.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
14. 14.🧩 Diya is 8 years old. Aarav is older than Diya. How old is Aarav? (a) not enough info (b) 13 (c) 9 (d) 10
15. 15.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 80 (d) 16
16. 16.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 7 PM (c) 4 PM (d) not enough info
17. 17.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
18. 18.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
19. 19.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
20. 20.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 3 PM
21. 21.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
22. 22.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
23. 23.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
24. 24.🧩 Nisha bought 2 kites and a cap for ₹130 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹130 (d) ₹128
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
26. 26.🧩 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
27. 27.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) yes, mangoes match (d) no, check more
28. 28.🧩 Meera is 12 years old. Kabir is 8 years older than Meera. How old is Kabir? (a) 8 (b) not enough info (c) 21 (d) 20
29. 29.🧩 Meera bought 3 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹45 (c) ₹120 (d) not enough info
30. 30.🧩 Ishaan bought 4 notebooks for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹160 (b) ₹45 (c) ₹40 (d) not enough info
31. 31.🧩 Arjun bought 2 balls for ₹20 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹20
32. 32.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 13 (b) 48 (c) not enough info (d) 42
33. 33.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
34. 34.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 24 (b) 9 (c) 20 (d) not enough info
35. 35.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
36. 36.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
37. 37.🧩 Rohan bought 2 mangoes and a water bottle for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹120 (c) ₹60 (d) ₹118
38. 38.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
39. 39.🧩 Meera bought 4 notebooks and a cap for ₹260 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) not enough info (c) ₹256 (d) ₹260
40. 40.🧩 Meera bought 6 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹180

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