Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 366 · 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.🧩 Diya is 7 years old. Meera is 3 years older than Diya. How old is Meera? (a) 3 (b) 11 (c) not enough info (d) 10
2. 2.🧩 Meera bought 4 kites and a cap for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹176 (c) ₹180 (d) not enough info
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
5. 5.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
6. 6.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
7. 7.🧩 Nisha bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹75 (c) ₹30 (d) ₹25
8. 8.🧩 Vihaan bought 5 markers and a lunch box for ₹265 in all. Each marker cost the same. What did one marker cost? (a) ₹265 (b) ₹260 (c) ₹53 (d) not enough info
9. 9.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
10. 10.🧩 Vihaan bought 2 kites and a cap for ₹160 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹160 (c) ₹80 (d) ₹158
11. 11.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
13. 13.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
14. 14.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Tara bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹110 (b) not enough info (c) ₹55 (d) ₹60
16. 16.🧩 Meera bought 2 kites and a bag for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹98 (b) ₹50 (c) not enough info (d) ₹100
17. 17.🧩 Aarav is 7 years old. Rohan is 8 years older than Aarav. How old is Rohan? (a) 16 (b) 15 (c) 8 (d) not enough info
18. 18.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
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Meera bought 2 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) not enough info (c) ₹30 (d) ₹35
21. 21.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM
22. 22.🧩 Nisha bought 6 kites and a water bottle for ₹320 in all. Each kite cost the same. What did one kite cost? (a) ₹320 (b) not enough info (c) ₹53 (d) ₹314
23. 23.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
24. 24.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
25. 25.🧩 Diya bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹55 (d) ₹275
26. 26.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 8 PM (d) 7 PM
27. 27.🧩 Vihaan bought 2 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹40 (c) ₹80 (d) not enough info
28. 28.🥭 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) no mango is sweet (d) yes, it is certain
29. 29.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
30. 30.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
31. 31.🧩 Rohan is 12 years old. Saanvi is 2 years older than Rohan. How old is Saanvi? (a) not enough info (b) 2 (c) 15 (d) 14
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Vihaan bought 6 pens and a cap for ₹290 in all. Each pen cost the same. What did one pen cost? (a) ₹48 (b) not enough info (c) ₹290 (d) ₹284
35. 35.🧩 Saanvi bought 5 balls and a cap for ₹170 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹165 (c) ₹34 (d) ₹170
36. 36.🧩 Vihaan bought 6 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) not enough info (c) ₹25 (d) ₹20
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
39. 39.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
40. 40.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence

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