Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 887 · 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.🧩 Kabir is 6 years old. Ishaan is 7 years older than Kabir. How old is Ishaan? (a) 13 (b) 14 (c) not enough info (d) 7
2. 2.🥭 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) yes, it is certain (c) no, check more (d) no mango is sweet
3. 3.🧩 Meera bought 3 balls for ₹165 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹60 (c) ₹55 (d) ₹165
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
5. 5.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
7. 7.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
8. 8.🧩 Rohan is 6 years old. Tara is 7 years older than Rohan. How old is Tara? (a) 7 (b) not enough info (c) 14 (d) 13
9. 9.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
10. 10.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
11. 11.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 72 (d) 64
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
18. 18.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Ishaan bought 4 notebooks and a bag for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹96 (b) ₹100 (c) not enough info (d) ₹25
22. 22.🧩 Aarav bought 2 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹30 (d) ₹15
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
24. 24.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 13 (b) 45 (c) not enough info (d) 36
25. 25.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
26. 26.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
27. 27.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
28. 28.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
29. 29.🧩 Aarav bought 4 kites and a cap for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹236 (b) not enough info (c) ₹60 (d) ₹240
30. 30.🧩 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
31. 31.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
32. 32.🧩 Ananya bought 3 kites and a cap for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹66 (b) ₹197 (c) not enough info (d) ₹200
33. 33.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
35. 35.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
36. 36.🧩 A box has 8 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 40 (b) 45 (c) not enough info (d) 13
37. 37.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
38. 38.🧩 Tara is 8 years old. Arjun is 5 years older than Tara. How old is Arjun? (a) not enough info (b) 14 (c) 13 (d) 5
39. 39.🧩 Arjun bought 4 pens and a water bottle for ₹130 in all. Each pen cost the same. What did one pen cost? (a) ₹126 (b) ₹130 (c) not enough info (d) ₹32
40. 40.🧩 Saanvi bought 5 notebooks and a cap for ₹270 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹265 (c) ₹54 (d) ₹270

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