Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 187 · 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.🧩 Diya bought 2 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) ₹50 (c) ₹45 (d) not enough info
2. 2.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
3. 3.🧩 Nisha bought 2 balls and a cap for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹90 (b) ₹178 (c) ₹180 (d) not enough info
4. 4.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 4 PM (d) 7 PM
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
6. 6.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
7. 7.🧩 Tara is 8 years old. Meera is 3 years older than Tara. How old is Meera? (a) 11 (b) 12 (c) not enough info (d) 3
8. 8.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
10. 10.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
13. 13.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 16 (b) 20 (c) 8 (d) not enough info
14. 14.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
15. 15.🧩 Rohan is 12 years old. Ananya is older than Rohan. How old is Ananya? (a) not enough info (b) 14 (c) 13 (d) 17
16. 16.🧩 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
17. 17.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
18. 18.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
19. 19.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 5 PM
20. 20.🧩 Nisha bought 4 notebooks and a cap for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹210 (c) ₹52 (d) ₹206
21. 21.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
22. 22.🥭 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) no mango is sweet (c) no, check more (d) yes, it is certain
23. 23.🧩 Diya is 11 years old. Kabir is 8 years older than Diya. How old is Kabir? (a) 20 (b) 19 (c) 8 (d) not enough info
24. 24.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
25. 25.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 45 (c) 13 (d) 36
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
27. 27.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
29. 29.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 3 PM
30. 30.🧩 Aarav bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹20 (c) not enough info (d) ₹15
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
32. 32.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 9 (b) not enough info (c) 18 (d) 24
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
34. 34.🧩 A box has 3 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 20 (b) not enough info (c) 15 (d) 8
35. 35.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
37. 37.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 14 (c) 54 (d) 48
38. 38.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) 6 (c) not enough info (d) 60
39. 39.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
40. 40.🧩 Arjun bought 4 balls and a lunch box for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹240 (b) not enough info (c) ₹60 (d) ₹236

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