Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 871 · 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.🧩 Meera bought 5 notebooks and a bag for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹200 (c) not enough info (d) ₹195
2. 2.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
4. 4.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
6. 6.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) 45 (b) not enough info (c) 40 (d) 13
7. 7.🧩 Aarav is 9 years old. Diya is older than Aarav. How old is Diya? (a) 10 (b) 11 (c) not enough info (d) 14
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
9. 9.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no, check more (d) no mango is sweet
10. 10.🧩 A box has 3 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 18 (b) 9 (c) not enough info (d) 24
11. 11.🧩 Rohan is 10 years old. Nisha is older than Rohan. How old is Nisha? (a) 11 (b) not enough info (c) 15 (d) 12
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
13. 13.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
14. 14.🧩 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
15. 15.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
16. 16.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
18. 18.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 9 PM (c) 8 PM (d) not enough info
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
22. 22.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 80 (c) not enough info (d) 8
23. 23.🧩 A box has 7 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 16 (b) 72 (c) 63 (d) not enough info
24. 24.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
26. 26.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
27. 27.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) 7 PM (d) not enough info
28. 28.🧩 Nisha is 7 years old. Rohan is older than Nisha. How old is Rohan? (a) 12 (b) 9 (c) 8 (d) not enough info
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Vihaan bought 3 balls and a bag for ₹165 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹162 (c) ₹165 (d) not enough info
31. 31.🧩 Kabir bought 5 pens for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹55 (c) not enough info (d) ₹250
32. 32.🧩 Meera is 11 years old. Tara is older than Meera. How old is Tara? (a) 12 (b) not enough info (c) 16 (d) 13
33. 33.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
34. 34.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
35. 35.🧩 Diya bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) ₹30 (c) ₹120 (d) not enough info
36. 36.🧩 Kabir bought 6 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹180 (b) ₹30 (c) ₹35 (d) not enough info
37. 37.🧩 Vihaan bought 2 pens and a water bottle for ₹130 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹128 (c) ₹130 (d) not enough info
38. 38.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
39. 39.🧩 Nisha bought 5 balls and a water bottle for ₹155 in all. Each ball cost the same. What did one ball cost? (a) ₹155 (b) ₹31 (c) ₹150 (d) not enough info
40. 40.🧩 Saanvi bought 3 kites and a water bottle for ₹260 in all. Each kite cost the same. What did one kite cost? (a) ₹257 (b) not enough info (c) ₹86 (d) ₹260

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