Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 228 · 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.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 42 (b) not enough info (c) 13 (d) 48
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 tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
4. 4.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
5. 5.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 10 (b) 5 (c) 50 (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) False (b) True
7. 7.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 2 PM (d) 6 PM
8. 8.🧩 Rohan bought 6 markers and a lunch box for ₹110 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹104 (c) ₹18 (d) ₹110
9. 9.🧩 Aarav is 10 years old. Diya is older than Aarav. How old is Diya? (a) 12 (b) not enough info (c) 11 (d) 15
10. 10.🧩 Aarav bought 2 kites for ₹70 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹40 (c) not enough info (d) ₹70
11. 11.🧩 Aarav is 11 years old. Arjun is 7 years older than Aarav. How old is Arjun? (a) 18 (b) 19 (c) 7 (d) not enough info
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Saanvi is 6 years old. Kabir is older than Saanvi. How old is Kabir? (a) 7 (b) 11 (c) 8 (d) not enough info
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (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) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
16. 16.🧩 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
17. 17.🧩 Tara bought 3 mangoes and a bag for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹180 (d) ₹177
18. 18.🧩 Vihaan is 12 years old. Diya is older than Vihaan. How old is Diya? (a) 13 (b) not enough info (c) 17 (d) 14
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
20. 20.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
21. 21.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
24. 24.🧩 A box has 4 rows of apples, with 9 in each row. How many apples are in the box? (a) not enough info (b) 45 (c) 13 (d) 36
25. 25.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
26. 26.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
28. 28.🧩 A box has 3 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 8 (b) 15 (c) 20 (d) not enough info
29. 29.🧩 A box has 4 rows of apples, with 7 in each row. How many apples are in the box? (a) 28 (b) 35 (c) 11 (d) not enough info
30. 30.🧩 Ananya is 11 years old. Nisha is 4 years older than Ananya. How old is Nisha? (a) 15 (b) 16 (c) not enough info (d) 4
31. 31.🧩 Kabir bought 2 pens and a water bottle for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹108 (b) not enough info (c) ₹110 (d) ₹55
32. 32.🧩 Arjun bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹10 (d) ₹15
33. 33.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
34. 34.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
35. 35.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) 14 (b) 54 (c) not enough info (d) 48
36. 36.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
37. 37.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
39. 39.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
40. 40.🧩 Diya bought 5 markers for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹300

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