Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 547 · 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.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) 9 (c) 90 (d) not enough info
2. 2.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
4. 4.🧩 Saanvi is 7 years old. Aarav is older than Saanvi. How old is Aarav? (a) 8 (b) 12 (c) not enough info (d) 9
5. 5.🧩 Aarav is 10 years old. Meera is 9 years older than Aarav. How old is Meera? (a) not enough info (b) 20 (c) 19 (d) 9
6. 6.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 6 PM
7. 7.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
8. 8.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 8 PM (c) 5 PM (d) not enough info
9. 9.🧩 Ishaan bought 5 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) not enough info (c) ₹10 (d) ₹15
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 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
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
15. 15.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 4 PM
16. 16.🥭 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 mango is sweet (d) no, check more
17. 17.🧩 Aarav bought 4 kites and a bag for ₹120 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹120 (c) ₹30 (d) ₹116
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
20. 20.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
21. 21.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
22. 22.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Rohan bought 6 balls and a cap for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹140 (b) not enough info (c) ₹134 (d) ₹23
24. 24.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
25. 25.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
26. 26.🧩 Vihaan is 6 years old. Ishaan is 9 years older than Vihaan. How old is Ishaan? (a) not enough info (b) 16 (c) 15 (d) 9
27. 27.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
28. 28.🧩 Saanvi is 11 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 16 (b) 13 (c) 12 (d) not enough info
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Tara bought 3 markers and a water bottle for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹36 (b) ₹110 (c) ₹107 (d) not enough info
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
32. 32.🧩 Kabir bought 5 balls for ₹300 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹300 (c) ₹65 (d) ₹60
33. 33.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
34. 34.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
35. 35.🧩 Diya bought 3 pens for ₹75 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹75 (c) not enough info (d) ₹30
36. 36.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 27 (b) 12 (c) not enough info (d) 36
37. 37.🧩 Nisha is 10 years old. Meera is 5 years older than Nisha. How old is Meera? (a) not enough info (b) 16 (c) 5 (d) 15
38. 38.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
39. 39.🧩 Vihaan bought 3 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹46 (b) ₹137 (c) ₹140 (d) not enough info
40. 40.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 10 PM (c) not enough info (d) 9 PM

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