Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 553 · 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 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Meera bought 5 kites and a water bottle for ₹165 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹165 (c) ₹160 (d) ₹33
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
5. 5.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
6. 6.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (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.” does not give enough evidence. (a) True (b) False
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
10. 10.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
13. 13.🧩 Diya bought 3 markers and a water bottle for ₹115 in all. Each marker cost the same. What did one marker cost? (a) ₹112 (b) ₹38 (c) not enough info (d) ₹115
14. 14.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
16. 16.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
17. 17.🧩 Ishaan bought 6 kites and a lunch box for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹194 (b) not enough info (c) ₹33 (d) ₹200
18. 18.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
19. 19.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
20. 20.🧩 Vihaan is 6 years old. Aarav is older than Vihaan. How old is Aarav? (a) 8 (b) not enough info (c) 7 (d) 11
21. 21.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
22. 22.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
23. 23.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
24. 24.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
25. 25.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
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.🧩 Vihaan bought 2 pens for ₹20 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) ₹20 (c) not enough info (d) ₹15
28. 28.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
29. 29.🧩 Kabir bought 3 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹120 (c) ₹40 (d) not enough info
30. 30.🧩 Aarav is 12 years old. Meera is 3 years older than Aarav. How old is Meera? (a) 15 (b) 3 (c) 16 (d) not enough info
31. 31.🧩 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
32. 32.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box has 6 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 54 (b) 15 (c) not enough info (d) 63
35. 35.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
36. 36.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
38. 38.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
39. 39.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True

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