Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 921 · 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 of laddoos has 6 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 60 (d) 6
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
4. 4.🧩 Aarav bought 5 balls and a bag for ₹320 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹315 (c) ₹320 (d) ₹64
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
7. 7.🧩 Aarav bought 3 markers and a water bottle for ₹205 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹68 (c) ₹205 (d) ₹202
8. 8.🧩 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
9. 9.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
10. 10.🧩 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
11. 11.🧩 Ishaan is 10 years old. Rohan is older than Ishaan. How old is Rohan? (a) 11 (b) 12 (c) not enough info (d) 15
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Nisha bought 4 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹50 (c) ₹45 (d) ₹180
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Rohan is 10 years old. Nisha is older than Rohan. How old is Nisha? (a) 15 (b) 12 (c) 11 (d) not enough info
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Saanvi bought 2 markers and a bag for ₹170 in all. Each marker cost the same. What did one marker cost? (a) ₹170 (b) ₹85 (c) ₹168 (d) not enough info
20. 20.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
21. 21.🧩 A box has 6 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 42 (b) 36 (c) 12 (d) not enough info
22. 22.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
23. 23.🧩 Kabir bought 6 kites for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹270
24. 24.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
25. 25.🧩 Vihaan is 7 years old. Diya is older than Vihaan. How old is Diya? (a) not enough info (b) 9 (c) 12 (d) 8
26. 26.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
27. 27.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
28. 28.🥭 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
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
30. 30.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 5 PM
31. 31.🧩 Ishaan is 11 years old. Diya is older than Ishaan. How old is Diya? (a) 16 (b) 12 (c) 13 (d) not enough info
32. 32.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
33. 33.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Aarav is 6 years old. Tara is 5 years older than Aarav. How old is Tara? (a) 12 (b) 5 (c) not enough info (d) 11
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Tara bought 2 mangoes for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹70 (b) ₹35 (c) not enough info (d) ₹40
39. 39.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False

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