Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 458 · 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.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
3. 3.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
7. 7.🥭 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, check more (d) no mango is sweet
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
9. 9.🧩 Arjun is 10 years old. Meera is older than Arjun. How old is Meera? (a) not enough info (b) 12 (c) 15 (d) 11
10. 10.🧩 A box has 6 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 56 (b) 48 (c) not enough info (d) 14
11. 11.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
12. 12.🧩 A box has 8 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 14 (b) not enough info (c) 54 (d) 48
13. 13.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
14. 14.🧩 Saanvi is 6 years old. Arjun is 4 years older than Saanvi. How old is Arjun? (a) 4 (b) 10 (c) not enough info (d) 11
15. 15.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) not enough info (b) 9 (c) 18 (d) 90
16. 16.🧩 Meera is 7 years old. Ananya is older than Meera. How old is Ananya? (a) 8 (b) 9 (c) 12 (d) not enough info
17. 17.🧩 Meera bought 5 kites for ₹275 in all. Each kite cost the same. What did one kite cost? (a) ₹275 (b) ₹55 (c) not enough info (d) ₹60
18. 18.🧩 Rohan bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) ₹40 (c) not enough info (d) ₹45
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Diya is 10 years old. Ananya is 5 years older than Diya. How old is Ananya? (a) 15 (b) not enough info (c) 16 (d) 5
22. 22.🧩 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
23. 23.🧩 Kabir is 7 years old. Diya is older than Kabir. How old is Diya? (a) 12 (b) not enough info (c) 9 (d) 8
24. 24.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 6 PM (c) not enough info (d) 5 PM
25. 25.🧩 Kabir bought 2 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹50 (b) ₹25 (c) not enough info (d) ₹30
26. 26.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) not enough info (d) 3 PM
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
28. 28.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
30. 30.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
32. 32.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) not enough info (d) 6 PM
33. 33.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
34. 34.🧩 Aarav is 8 years old. Meera is older than Aarav. How old is Meera? (a) 13 (b) 9 (c) 10 (d) not enough info
35. 35.🧩 Aarav bought 5 balls for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) not enough info (c) ₹100 (d) ₹20
36. 36.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 9 PM (d) 8 PM
37. 37.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
38. 38.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
40. 40.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 6 PM (c) not enough info (d) 9 PM

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