Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 643 · 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.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Vihaan bought 5 pens for ₹125 in all. Each pen cost the same. What did one pen cost? (a) ₹125 (b) ₹25 (c) ₹30 (d) not enough info
3. 3.🧩 Diya bought 5 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) ₹65 (b) not enough info (c) ₹300 (d) ₹60
4. 4.🧩 Rohan is 10 years old. Aarav is older than Rohan. How old is Aarav? (a) 12 (b) 15 (c) 11 (d) not enough info
5. 5.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
6. 6.🧩 Meera bought 5 pens for ₹175 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹35 (c) ₹175 (d) ₹40
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
8. 8.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
9. 9.🧩 A box has 6 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 13 (b) 42 (c) not enough info (d) 49
10. 10.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 6 (c) 60 (d) not enough info
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
13. 13.🧩 Meera bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹40 (c) not enough info (d) ₹70
14. 14.🥭 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) no, check more (d) yes, it is certain
15. 15.🧩 Tara bought 6 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹180
16. 16.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
20. 20.🧩 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
21. 21.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
22. 22.🧩 Saanvi bought 5 mangoes and a lunch box for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹145 (c) not enough info (d) ₹150
23. 23.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 20 (b) not enough info (c) 8 (d) 16
24. 24.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 7 PM (c) not enough info (d) 6 PM
25. 25.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
26. 26.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
27. 27.🧩 Kabir bought 2 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹40 (c) ₹25 (d) not enough info
28. 28.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Ishaan is 9 years old. Nisha is 5 years older than Ishaan. How old is Nisha? (a) 5 (b) not enough info (c) 15 (d) 14
31. 31.🧩 Ananya bought 6 mangoes for ₹330 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹55 (d) ₹330
32. 32.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
33. 33.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
34. 34.🧩 Kabir bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹275 (c) not enough info (d) ₹55
35. 35.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
37. 37.🧩 Nisha bought 4 mangoes and a water bottle for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹146 (b) not enough info (c) ₹150 (d) ₹37
38. 38.🧩 Vihaan bought 6 balls and a cap for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹25 (c) ₹150 (d) ₹144
39. 39.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 8 PM (d) 9 PM
40. 40.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM

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