Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 893 · 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.🧩 Arjun bought 6 kites for ₹330 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹55 (c) ₹330 (d) not enough info
2. 2.🧩 A box has 7 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 32 (c) 28 (d) 11
3. 3.🧩 Rohan bought 2 notebooks and a cap for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) not enough info (c) ₹20 (d) ₹38
4. 4.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) 7 PM (d) not enough info
5. 5.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
8. 8.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
9. 9.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 9 PM (d) 6 PM
10. 10.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
11. 11.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
12. 12.🧩 Ishaan is 10 years old. Diya is 3 years older than Ishaan. How old is Diya? (a) 14 (b) 13 (c) 3 (d) not enough info
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
17. 17.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 3 PM (d) not enough info
18. 18.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 45 (c) 13 (d) 40
19. 19.🧩 A box has 3 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 20 (b) not enough info (c) 8 (d) 15
20. 20.🧩 Meera is 6 years old. Diya is 8 years older than Meera. How old is Diya? (a) 15 (b) 8 (c) not enough info (d) 14
21. 21.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
22. 22.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
23. 23.🧩 A box has 6 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 42 (b) 12 (c) not enough info (d) 36
24. 24.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
25. 25.🧩 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
26. 26.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
27. 27.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
28. 28.🧩 Vihaan is 7 years old. Rohan is older than Vihaan. How old is Rohan? (a) 9 (b) 12 (c) 8 (d) not enough info
29. 29.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
30. 30.🧩 Rohan is 11 years old. Ishaan is 7 years older than Rohan. How old is Ishaan? (a) 7 (b) 18 (c) not enough info (d) 19
31. 31.🧩 Arjun bought 2 kites for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹80 (b) ₹40 (c) not enough info (d) ₹45
32. 32.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Meera is 8 years old. Vihaan is 7 years older than Meera. How old is Vihaan? (a) 16 (b) 7 (c) 15 (d) not enough info
34. 34.🧩 Meera bought 3 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹35 (c) ₹30 (d) not enough info
35. 35.🧩 Ishaan bought 2 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹90 (b) ₹50 (c) not enough info (d) ₹45
36. 36.🧩 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
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
38. 38.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
39. 39.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
40. 40.🧩 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

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