Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 482 · 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 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
2. 2.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
3. 3.🧩 A box has 5 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 25 (b) 10 (c) not enough info (d) 30
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
5. 5.🥭 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) no mango is sweet (c) yes, it is certain (d) no, check more
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
8. 8.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
9. 9.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
10. 10.🧩 Tara is 12 years old. Ananya is older than Tara. How old is Ananya? (a) 13 (b) 17 (c) 14 (d) not enough info
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
13. 13.🧩 A box has 8 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 13 (b) 45 (c) 40 (d) not enough info
14. 14.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
16. 16.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
17. 17.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
19. 19.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
21. 21.🧩 Rohan is 10 years old. Ananya is 8 years older than Rohan. How old is Ananya? (a) 18 (b) 19 (c) not enough info (d) 8
22. 22.🧩 Ananya bought 5 markers and a lunch box for ₹365 in all. Each marker cost the same. What did one marker cost? (a) ₹73 (b) ₹360 (c) not enough info (d) ₹365
23. 23.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
26. 26.🧩 A box has 5 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 24 (c) 20 (d) 9
27. 27.🧩 Kabir bought 5 balls and a bag for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹75 (b) ₹16 (c) ₹80 (d) not enough info
28. 28.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
29. 29.🧩 Aarav bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹105 (c) ₹35 (d) ₹40
30. 30.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
31. 31.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
32. 32.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
33. 33.🧩 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
34. 34.🧩 Ananya bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹25 (d) ₹40
35. 35.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Saanvi bought 4 markers and a bag for ₹210 in all. Each marker cost the same. What did one marker cost? (a) ₹52 (b) not enough info (c) ₹210 (d) ₹206
37. 37.🧩 Nisha is 7 years old. Tara is older than Nisha. How old is Tara? (a) 8 (b) 9 (c) 12 (d) not enough info
38. 38.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
39. 39.🧩 Kabir bought 3 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹50 (c) ₹55 (d) ₹150
40. 40.🧩 Vihaan bought 5 kites for ₹225 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹45 (c) not enough info (d) ₹225

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