Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 261 · 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.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
2. 2.🧩 Nisha is 11 years old. Tara is 8 years older than Nisha. How old is Tara? (a) not enough info (b) 20 (c) 8 (d) 19
3. 3.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 16 (b) 12 (c) not enough info (d) 7
4. 4.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
7. 7.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
8. 8.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 2 PM
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
10. 10.🧩 Ishaan is 7 years old. Vihaan is 2 years older than Ishaan. How old is Vihaan? (a) not enough info (b) 2 (c) 9 (d) 10
11. 11.🧩 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
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
13. 13.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
14. 14.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 6 PM
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Aarav is 8 years old. Kabir is 2 years older than Aarav. How old is Kabir? (a) 10 (b) 2 (c) not enough info (d) 11
17. 17.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
18. 18.🥭 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) no mango is sweet (c) no, check more (d) yes, mangoes match
19. 19.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
20. 20.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
22. 22.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
23. 23.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Diya bought 6 notebooks and a water bottle for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹194 (c) ₹33 (d) ₹200
25. 25.🧩 Arjun bought 5 kites and a water bottle for ₹110 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹22 (c) ₹105 (d) ₹110
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
27. 27.🧩 Saanvi bought 6 pens and a bag for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) ₹144 (c) not enough info (d) ₹25
28. 28.🧩 Saanvi bought 4 notebooks and a water bottle for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹240 (b) not enough info (c) ₹236 (d) ₹60
29. 29.🧩 Diya bought 4 markers for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹240 (c) not enough info (d) ₹65
30. 30.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 13 (b) not enough info (c) 48 (d) 42
31. 31.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 14 (c) 49 (d) 56
32. 32.🧩 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
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.🧩 Tara bought 2 markers for ₹20 in all. Each marker cost the same. What did one marker cost? (a) ₹20 (b) ₹10 (c) not enough info (d) ₹15
35. 35.🧩 A box has 8 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 54 (b) not enough info (c) 14 (d) 48
36. 36.🧩 Nisha bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹65 (b) not enough info (c) ₹60 (d) ₹240
37. 37.🧩 Diya bought 3 kites and a bag for ₹95 in all. Each kite cost the same. What did one kite cost? (a) ₹31 (b) not enough info (c) ₹95 (d) ₹92
38. 38.🧩 Ananya bought 6 balls and a lunch box for ₹230 in all. Each ball cost the same. What did one ball cost? (a) ₹38 (b) ₹230 (c) not enough info (d) ₹224
39. 39.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 3 PM
40. 40.🧩 Rohan is 11 years old. Ananya is older than Rohan. How old is Ananya? (a) not enough info (b) 13 (c) 16 (d) 12

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