Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 308 · 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 has 7 rows of oranges, with 9 in each row. How many oranges are in the box? (a) not enough info (b) 16 (c) 63 (d) 72
2. 2.🧩 Kabir bought 6 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹90 (b) ₹20 (c) ₹15 (d) not enough info
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
4. 4.🧩 Aarav is 7 years old. Ishaan is 8 years older than Aarav. How old is Ishaan? (a) 16 (b) 8 (c) 15 (d) not enough info
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
6. 6.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 7 PM
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
8. 8.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 7 PM (d) 8 PM
9. 9.🧩 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
10. 10.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
11. 11.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 9 (c) 24 (d) 20
12. 12.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
13. 13.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) no, check more (d) yes, mangoes match
14. 14.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
15. 15.🧩 Saanvi is 9 years old. Kabir is 6 years older than Saanvi. How old is Kabir? (a) 6 (b) 15 (c) not enough info (d) 16
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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
18. 18.🧩 Kabir bought 4 balls for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹40 (c) ₹160 (d) not enough info
19. 19.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Rohan bought 2 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) not enough info (c) ₹55 (d) ₹100
23. 23.🧩 Rohan bought 4 mangoes for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹200 (b) ₹55 (c) ₹50 (d) not enough info
24. 24.🧩 Rohan is 7 years old. Aarav is older than Rohan. How old is Aarav? (a) 9 (b) 12 (c) not enough info (d) 8
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Tara bought 3 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) not enough info (c) ₹35 (d) ₹90
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
28. 28.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
29. 29.🧩 Nisha bought 2 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹50 (c) not enough info (d) ₹25
30. 30.🧩 Arjun is 10 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 12 (b) not enough info (c) 15 (d) 11
31. 31.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
32. 32.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
33. 33.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 81 (b) 17 (c) 72 (d) not enough info
34. 34.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
35. 35.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) not enough info (c) 5 PM (d) 4 PM
36. 36.🧩 Meera is 11 years old. Ishaan is 6 years older than Meera. How old is Ishaan? (a) 17 (b) not enough info (c) 18 (d) 6
37. 37.🧩 A box has 4 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 40 (b) not enough info (c) 12 (d) 32
38. 38.🧩 Ananya bought 5 kites for ₹225 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹45 (c) ₹50 (d) ₹225
39. 39.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM
40. 40.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence

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