Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 805 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
2. 2.🧩 Meera bought 6 notebooks and a cap for ₹250 in all. Each notebook cost the same. What did one notebook cost? (a) ₹41 (b) not enough info (c) ₹250 (d) ₹244
3. 3.🧩 Diya bought 6 pens and a cap for ₹420 in all. Each pen cost the same. What did one pen cost? (a) ₹414 (b) not enough info (c) ₹420 (d) ₹70
4. 4.🧩 Saanvi is 11 years old. Rohan is older than Saanvi. How old is Rohan? (a) 13 (b) 16 (c) 12 (d) not enough info
5. 5.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 8 PM
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
8. 8.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
9. 9.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
10. 10.🥭 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
11. 11.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 2 PM
12. 12.🧩 Meera is 11 years old. Aarav is older than Meera. How old is Aarav? (a) 12 (b) not enough info (c) 16 (d) 13
13. 13.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
15. 15.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 28 (b) 35 (c) not enough info (d) 11
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
17. 17.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
18. 18.🧩 Ananya bought 6 notebooks and a bag for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹210 (b) not enough info (c) ₹204 (d) ₹35
19. 19.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
20. 20.🧩 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
21. 21.🧩 Ananya bought 3 kites and a cap for ₹170 in all. Each kite cost the same. What did one kite cost? (a) ₹167 (b) ₹170 (c) ₹56 (d) not enough info
22. 22.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
24. 24.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Rohan is 10 years old. Diya is older than Rohan. How old is Diya? (a) 11 (b) not enough info (c) 12 (d) 15
28. 28.🧩 Vihaan is 11 years old. Meera is 6 years older than Vihaan. How old is Meera? (a) 18 (b) not enough info (c) 17 (d) 6
29. 29.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 36 (b) 12 (c) 32 (d) not enough info
30. 30.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
31. 31.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
32. 32.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
33. 33.🧩 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
34. 34.🧩 Tara is 6 years old. Rohan is 6 years older than Tara. How old is Rohan? (a) 12 (b) not enough info (c) 6 (d) 13
35. 35.🐕 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
36. 36.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
37. 37.🧩 Nisha is 6 years old. Ishaan is 3 years older than Nisha. How old is Ishaan? (a) 9 (b) 3 (c) not enough info (d) 10
38. 38.🧩 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
39. 39.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 3 PM
40. 40.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 28 (d) 24

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