Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 200 · 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.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 11 (b) not enough info (c) 36 (d) 30
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
5. 5.🧩 Arjun bought 2 balls and a bag for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹180 (b) ₹178 (c) not enough info (d) ₹90
6. 6.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
7. 7.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 18 (b) 9 (c) not enough info (d) 24
8. 8.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Vihaan is 11 years old. Nisha is older than Vihaan. How old is Nisha? (a) not enough info (b) 12 (c) 16 (d) 13
10. 10.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
11. 11.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
12. 12.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
13. 13.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 9 (c) 25 (d) 20
14. 14.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
15. 15.🧩 A box has 4 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 11 (b) 35 (c) 28 (d) not enough info
16. 16.🧩 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
17. 17.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
18. 18.🧩 A box has 6 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 42 (c) 49 (d) 13
19. 19.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
20. 20.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
21. 21.🧩 Ananya bought 4 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹240
22. 22.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 27 (b) 12 (c) not enough info (d) 36
23. 23.🧩 A box has 6 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 49 (c) 42 (d) 13
24. 24.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
25. 25.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
28. 28.🧩 Diya is 9 years old. Meera is older than Diya. How old is Meera? (a) 10 (b) not enough info (c) 11 (d) 14
29. 29.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
30. 30.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
32. 32.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
33. 33.🧩 Rohan bought 5 markers and a cap for ₹320 in all. Each marker cost the same. What did one marker cost? (a) ₹315 (b) not enough info (c) ₹64 (d) ₹320
34. 34.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
35. 35.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
36. 36.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
37. 37.🧩 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
38. 38.🧩 Diya bought 2 pens and a bag for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹70 (b) not enough info (c) ₹35 (d) ₹68
39. 39.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
40. 40.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 2 PM

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