Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 916 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
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.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
4. 4.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
5. 5.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
7. 7.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
8. 8.🧩 Nisha bought 4 balls for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹160 (c) not enough info (d) ₹40
9. 9.🧩 Aarav is 7 years old. Kabir is 3 years older than Aarav. How old is Kabir? (a) not enough info (b) 3 (c) 11 (d) 10
10. 10.🧩 Ananya bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹120
11. 11.🧩 Tara bought 5 notebooks and a bag for ₹230 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹225 (c) ₹230 (d) ₹46
12. 12.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
13. 13.🧩 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
14. 14.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
16. 16.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) 70 (c) not enough info (d) 7
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Rohan bought 6 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) ₹60 (c) ₹15 (d) not enough info
21. 21.🧩 Tara bought 4 markers for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹35 (b) not enough info (c) ₹40 (d) ₹140
22. 22.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
23. 23.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Ishaan is 7 years old. Aarav is older than Ishaan. How old is Aarav? (a) 8 (b) not enough info (c) 12 (d) 9
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
26. 26.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 10 (b) 28 (c) 24 (d) not enough info
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Kabir bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) not enough info (c) ₹40 (d) ₹45
30. 30.🧩 Kabir bought 5 markers for ₹125 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹125 (d) ₹25
31. 31.🧩 Saanvi bought 6 pens for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹40 (d) ₹210
32. 32.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
33. 33.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
34. 34.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
35. 35.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
36. 36.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
38. 38.🧩 Vihaan is 9 years old. Tara is 7 years older than Vihaan. How old is Tara? (a) not enough info (b) 17 (c) 16 (d) 7
39. 39.🧩 Ananya bought 2 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹50 (b) not enough info (c) ₹45 (d) ₹90
40. 40.🧩 Saanvi is 7 years old. Meera is older than Saanvi. How old is Meera? (a) 9 (b) not enough info (c) 12 (d) 8

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