Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 282 · 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.🧩 Saanvi is 12 years old. Rohan is older than Saanvi. How old is Rohan? (a) 14 (b) 13 (c) 17 (d) not enough info
2. 2.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 45 (b) 36 (c) 13 (d) not enough info
3. 3.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) the colour of ink (d) your handwriting
4. 4.🐕 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
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” 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, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Tara is 8 years old. Ananya is 8 years older than Tara. How old is Ananya? (a) 8 (b) not enough info (c) 17 (d) 16
10. 10.🧩 Ananya is 9 years old. Vihaan is 6 years older than Ananya. How old is Vihaan? (a) 6 (b) not enough info (c) 15 (d) 16
11. 11.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
13. 13.🧩 Arjun bought 2 mangoes and a water bottle for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) ₹148 (c) not enough info (d) ₹150
14. 14.🧩 Diya is 10 years old. Rohan is older than Diya. How old is Rohan? (a) 11 (b) 12 (c) 15 (d) not enough info
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
16. 16.🧩 Aarav bought 3 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹150 (b) ₹50 (c) ₹55 (d) not enough info
17. 17.🧩 Aarav bought 4 notebooks and a bag for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) not enough info (c) ₹27 (d) ₹106
18. 18.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Aarav is 6 years old. Tara is older than Aarav. How old is Tara? (a) 8 (b) 11 (c) not enough info (d) 7
20. 20.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
21. 21.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
22. 22.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
23. 23.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
24. 24.🧩 Diya bought 6 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹90
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
27. 27.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) not enough info (c) 14 (d) 7
28. 28.🧩 Rohan bought 3 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹25 (c) ₹60 (d) ₹20
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
30. 30.🧩 Ishaan bought 6 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹25 (d) ₹150
31. 31.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
32. 32.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
33. 33.🧩 Vihaan bought 6 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹25 (c) ₹150 (d) ₹30
34. 34.🧩 Aarav is 12 years old. Vihaan is 2 years older than Aarav. How old is Vihaan? (a) 2 (b) not enough info (c) 15 (d) 14
35. 35.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
36. 36.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
38. 38.🧩 A box has 5 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 35 (c) 42 (d) 12
39. 39.🧩 Saanvi is 11 years old. Kabir is older than Saanvi. How old is Kabir? (a) 13 (b) 16 (c) 12 (d) not enough info
40. 40.🧩 Aarav bought 3 pens and a water bottle for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) not enough info (c) ₹147 (d) ₹50

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