Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 163 · 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 8 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 15 (b) 56 (c) not enough info (d) 63
2. 2.🐕 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
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
4. 4.🧩 Nisha bought 2 pens for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) not enough info (c) ₹70 (d) ₹35
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
6. 6.🧩 Aarav is 12 years old. Arjun is 5 years older than Aarav. How old is Arjun? (a) 18 (b) 5 (c) not enough info (d) 17
7. 7.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 35 (b) 11 (c) not enough info (d) 30
8. 8.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
9. 9.🧩 Saanvi bought 5 balls and a cap for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹180 (b) not enough info (c) ₹36 (d) ₹175
10. 10.🧩 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
11. 11.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
12. 12.🧩 Kabir bought 3 mangoes for ₹45 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹20 (c) not enough info (d) ₹15
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
14. 14.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
15. 15.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
16. 16.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Nisha bought 3 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹180 (b) not enough info (c) ₹60 (d) ₹65
19. 19.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
21. 21.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 8 PM (c) 6 PM (d) not enough info
22. 22.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
23. 23.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 9 (b) 24 (c) not enough info (d) 20
24. 24.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Kabir bought 2 pens for ₹20 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) ₹15 (c) ₹20 (d) not enough info
26. 26.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
27. 27.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 7 PM
28. 28.🧩 Vihaan bought 2 kites for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹110 (b) not enough info (c) ₹60 (d) ₹55
29. 29.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) yes, it is certain (d) no mango is sweet
30. 30.🧩 Tara is 7 years old. Diya is 6 years older than Tara. How old is Diya? (a) 6 (b) 13 (c) not enough info (d) 14
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
32. 32.🧩 A box has 3 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 11 (b) 32 (c) not enough info (d) 24
33. 33.🧩 A box has 8 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 17 (b) 81 (c) not enough info (d) 72
34. 34.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 40 (c) not enough info (d) 8
35. 35.🧩 A box has 4 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 25 (b) 20 (c) 9 (d) not enough info
36. 36.🧩 Rohan is 11 years old. Diya is older than Rohan. How old is Diya? (a) 12 (b) 13 (c) 16 (d) not enough info
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
38. 38.🧩 Ananya is 11 years old. Arjun is older than Ananya. How old is Arjun? (a) 12 (b) 13 (c) not enough info (d) 16
39. 39.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
40. 40.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour

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