Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 695 · 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.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
2. 2.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
3. 3.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
4. 4.🧩 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
5. 5.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 4 PM (c) 7 PM (d) not enough info
6. 6.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 14 (b) not enough info (c) 48 (d) 54
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.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
9. 9.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
10. 10.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
11. 11.🧩 Rohan is 9 years old. Kabir is older than Rohan. How old is Kabir? (a) 10 (b) 11 (c) not enough info (d) 14
12. 12.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 3 PM (c) 6 PM (d) 7 PM
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
16. 16.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
17. 17.🧩 Aarav is 6 years old. Rohan is 2 years older than Aarav. How old is Rohan? (a) 9 (b) not enough info (c) 8 (d) 2
18. 18.🧩 A box has 5 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 9 (b) 24 (c) 20 (d) not enough info
19. 19.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 20 (d) 8
20. 20.🧩 Aarav is 11 years old. Diya is older than Aarav. How old is Diya? (a) 12 (b) not enough info (c) 13 (d) 16
21. 21.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
22. 22.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
23. 23.🧩 A box has 8 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 36 (b) 32 (c) not enough info (d) 12
24. 24.🧩 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
25. 25.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 6 PM
26. 26.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
28. 28.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
29. 29.🧩 Ananya bought 4 markers and a water bottle for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) not enough info (c) ₹216 (d) ₹220
30. 30.🧩 Diya is 8 years old. Ishaan is older than Diya. How old is Ishaan? (a) 13 (b) 10 (c) 9 (d) not enough info
31. 31.🧩 Saanvi bought 3 mangoes and a water bottle for ₹70 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹67 (c) ₹70 (d) ₹23
32. 32.🧩 Arjun is 7 years old. Ishaan is 4 years older than Arjun. How old is Ishaan? (a) not enough info (b) 12 (c) 11 (d) 4
33. 33.🧩 Vihaan bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) ₹15 (c) not enough info (d) ₹20
34. 34.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
35. 35.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Aarav is 6 years old. Kabir is 8 years older than Aarav. How old is Kabir? (a) 8 (b) 14 (c) 15 (d) not enough info
37. 37.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
38. 38.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 72 (b) 16 (c) not enough info (d) 63
39. 39.🧩 Nisha is 11 years old. Diya is older than Nisha. How old is Diya? (a) 12 (b) 13 (c) 16 (d) not enough info
40. 40.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False

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