Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 932 · 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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
2. 2.🧩 Diya bought 3 balls for ₹105 in all. Each ball cost the same. What did one ball cost? (a) ₹105 (b) not enough info (c) ₹40 (d) ₹35
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
6. 6.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
7. 7.🧩 Ishaan bought 2 kites and a lunch box for ₹140 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹138 (c) ₹70 (d) ₹140
8. 8.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
10. 10.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
11. 11.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 8 PM
12. 12.🧩 Vihaan bought 5 mangoes for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹300 (c) not enough info (d) ₹65
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
15. 15.🥭 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) yes, mangoes match (c) no, check more (d) yes, it is certain
16. 16.🧩 Arjun bought 3 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) not enough info (c) ₹30 (d) ₹15
17. 17.🧩 Diya bought 2 notebooks and a lunch box for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹70 (c) ₹138 (d) ₹140
18. 18.🧩 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
19. 19.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
20. 20.🧩 Meera is 6 years old. Rohan is 6 years older than Meera. How old is Rohan? (a) 12 (b) 6 (c) not enough info (d) 13
21. 21.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
22. 22.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 12 (b) 6 (c) 60 (d) not enough info
23. 23.🧩 Aarav is 7 years old. Meera is 3 years older than Aarav. How old is Meera? (a) 11 (b) 10 (c) not enough info (d) 3
24. 24.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
25. 25.🧩 Vihaan bought 5 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) not enough info (c) ₹60 (d) ₹65
26. 26.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
27. 27.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
29. 29.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
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.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
33. 33.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 8 PM (c) not enough info (d) 9 PM
34. 34.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
35. 35.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 21 (b) not enough info (c) 28 (d) 10
36. 36.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) 10 (b) not enough info (c) 28 (d) 21
37. 37.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
38. 38.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
39. 39.🧩 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
40. 40.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True

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