Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 705 · 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.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) yes, mangoes match (d) no mango is sweet
2. 2.🧩 Rohan is 7 years old. Diya is older than Rohan. How old is Diya? (a) 12 (b) 8 (c) 9 (d) not enough info
3. 3.🧩 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
4. 4.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
5. 5.🧩 Ananya bought 6 kites for ₹270 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹45 (c) ₹270 (d) ₹50
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.🧩 Saanvi bought 5 balls and a lunch box for ₹155 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹31 (c) ₹150 (d) ₹155
8. 8.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
9. 9.🧩 Kabir bought 3 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹45 (c) not enough info (d) ₹40
10. 10.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 9 PM (d) not enough info
11. 11.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
12. 12.🧩 Meera bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹25 (c) ₹30 (d) ₹50
13. 13.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
14. 14.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
17. 17.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Kabir is 6 years old. Meera is 7 years older than Kabir. How old is Meera? (a) 14 (b) not enough info (c) 13 (d) 7
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
21. 21.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
24. 24.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 25 (b) not enough info (c) 10 (d) 30
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
26. 26.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
27. 27.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
28. 28.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
31. 31.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
32. 32.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 12 (b) 35 (c) not enough info (d) 40
33. 33.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 3 PM (d) 5 PM
34. 34.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
35. 35.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
36. 36.🧩 Rohan is 6 years old. Saanvi is older than Rohan. How old is Saanvi? (a) not enough info (b) 11 (c) 8 (d) 7
37. 37.🧩 Meera is 9 years old. Vihaan is older than Meera. How old is Vihaan? (a) 10 (b) 14 (c) not enough info (d) 11
38. 38.🧩 Ananya is 7 years old. Diya is older than Ananya. How old is Diya? (a) 8 (b) 9 (c) not enough info (d) 12
39. 39.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
40. 40.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 7 PM (c) not enough info (d) 6 PM

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