Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 855 · 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 mango is sweet (b) yes, it is certain (c) no, check more (d) yes, mangoes match
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
4. 4.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
5. 5.🧩 Vihaan is 9 years old. Tara is older than Vihaan. How old is Tara? (a) 11 (b) 10 (c) not enough info (d) 14
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
7. 7.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
8. 8.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 7 (d) 16
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
11. 11.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 4 PM
12. 12.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
13. 13.🧩 Vihaan is 8 years old. Tara is 4 years older than Vihaan. How old is Tara? (a) not enough info (b) 12 (c) 4 (d) 13
14. 14.🧩 Arjun is 6 years old. Aarav is older than Arjun. How old is Aarav? (a) 8 (b) 7 (c) not enough info (d) 11
15. 15.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
16. 16.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
17. 17.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
18. 18.🧩 Diya is 6 years old. Aarav is 3 years older than Diya. How old is Aarav? (a) 10 (b) 9 (c) 3 (d) not enough info
19. 19.🧩 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
20. 20.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
21. 21.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
22. 22.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 25 (b) 30 (c) not enough info (d) 10
23. 23.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
24. 24.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
26. 26.🧩 A box has 4 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 20 (b) 25 (c) 9 (d) not enough info
27. 27.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 28 (c) 32 (d) 11
28. 28.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 45 (c) 40 (d) 13
29. 29.🧩 Saanvi bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹250
30. 30.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
31. 31.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 16 (b) 72 (c) 63 (d) not enough info
32. 32.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) 10 (c) 5 (d) not enough info
33. 33.🧩 Ishaan is 6 years old. Rohan is older than Ishaan. How old is Rohan? (a) not enough info (b) 11 (c) 8 (d) 7
34. 34.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 9 PM
35. 35.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
36. 36.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 4 PM
37. 37.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
38. 38.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 28 (b) 10 (c) not enough info (d) 24
39. 39.🧩 Diya bought 3 kites and a water bottle for ₹85 in all. Each kite cost the same. What did one kite cost? (a) ₹82 (b) ₹28 (c) ₹85 (d) not enough info
40. 40.🧩 Saanvi bought 4 pens and a lunch box for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹180 (c) ₹176 (d) not enough info

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