Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 116 · 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 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 6 PM
2. 2.🧩 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
3. 3.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Diya is 7 years old. Arjun is older than Diya. How old is Arjun? (a) 9 (b) not enough info (c) 8 (d) 12
5. 5.🧩 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
6. 6.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) 25 (b) 9 (c) 20 (d) not enough info
7. 7.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
9. 9.🧩 Ishaan is 12 years old. Nisha is 5 years older than Ishaan. How old is Nisha? (a) 17 (b) not enough info (c) 18 (d) 5
10. 10.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
11. 11.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
14. 14.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
15. 15.🧩 Vihaan bought 6 pens for ₹270 in all. Each pen cost the same. What did one pen cost? (a) ₹270 (b) ₹50 (c) not enough info (d) ₹45
16. 16.🧩 Vihaan is 6 years old. Rohan is older than Vihaan. How old is Rohan? (a) 7 (b) 11 (c) not enough info (d) 8
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
20. 20.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
21. 21.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 6 PM
22. 22.🧩 A box has 8 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 17 (b) 81 (c) 72 (d) not enough info
23. 23.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Meera bought 6 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) not enough info (c) ₹10 (d) ₹60
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” 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) no mango is sweet (b) no, check more (c) yes, mangoes match (d) yes, it is certain
29. 29.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
30. 30.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Meera bought 6 balls and a lunch box for ₹160 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹154 (c) ₹26 (d) ₹160
32. 32.🧩 Vihaan bought 4 kites for ₹80 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹80 (c) ₹25 (d) ₹20
33. 33.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
34. 34.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 3 PM (d) 5 PM
35. 35.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
36. 36.🧩 Arjun bought 2 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹60 (c) ₹65 (d) ₹120
37. 37.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
38. 38.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
39. 39.🧩 A box has 5 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 11 (b) 30 (c) not enough info (d) 36
40. 40.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 6 (b) 60 (c) 12 (d) not enough info

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