Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 903 · 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? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Rohan bought 4 pens and a water bottle for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹37 (b) not enough info (c) ₹146 (d) ₹150
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
4. 4.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 2 PM (d) 4 PM
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) no, check more (d) yes, it is certain
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
8. 8.📊 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
9. 9.🧩 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
10. 10.🧩 Aarav bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹10 (c) ₹20 (d) ₹15
11. 11.🧩 Meera is 6 years old. Arjun is 7 years older than Meera. How old is Arjun? (a) not enough info (b) 13 (c) 14 (d) 7
12. 12.🧩 Diya is 9 years old. Aarav is 6 years older than Diya. How old is Aarav? (a) 6 (b) 16 (c) not enough info (d) 15
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
15. 15.🧩 Aarav bought 4 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹55 (b) ₹50 (c) ₹200 (d) not enough info
16. 16.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 40 (b) 12 (c) 35 (d) not enough info
17. 17.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 7 PM (d) 6 PM
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
19. 19.🧩 Ishaan is 10 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 11 (b) 12 (c) 15 (d) not enough info
20. 20.🧩 Aarav is 6 years old. Diya is older than Aarav. How old is Diya? (a) 11 (b) not enough info (c) 7 (d) 8
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Ananya bought 2 pens and a cap for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹160 (b) not enough info (c) ₹80 (d) ₹158
23. 23.🧩 Tara is 6 years old. Saanvi is 2 years older than Tara. How old is Saanvi? (a) 2 (b) 8 (c) 9 (d) not enough info
24. 24.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
25. 25.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
26. 26.🧩 Nisha is 8 years old. Aarav is older than Nisha. How old is Aarav? (a) not enough info (b) 13 (c) 9 (d) 10
27. 27.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
28. 28.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
30. 30.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
31. 31.🧩 A box has 3 rows of eggs, with 9 in each row. How many eggs are in the box? (a) not enough info (b) 36 (c) 12 (d) 27
32. 32.🧩 Diya bought 4 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) not enough info (c) ₹180 (d) ₹50
33. 33.🧩 Ananya bought 6 kites and a cap for ₹190 in all. Each kite cost the same. What did one kite cost? (a) ₹184 (b) ₹190 (c) ₹31 (d) not enough info
34. 34.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
35. 35.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 2 PM (d) 5 PM
36. 36.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 42 (b) 13 (c) not enough info (d) 49
37. 37.🧩 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
38. 38.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
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.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence

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