Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 720 · 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 6 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 24 (b) 28 (c) not enough info (d) 10
2. 2.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
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
4. 4.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 5 PM (d) 7 PM
5. 5.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
6. 6.🧩 Kabir bought 2 balls and a cap for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹120 (c) not enough info (d) ₹118
7. 7.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
10. 10.🧩 A box has 7 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 11 (c) 32 (d) 28
11. 11.🧩 Diya bought 4 markers and a cap for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹176 (c) not enough info (d) ₹180
12. 12.🧩 Rohan is 12 years old. Meera is older than Rohan. How old is Meera? (a) 14 (b) 13 (c) not enough info (d) 17
13. 13.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
14. 14.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
15. 15.🧩 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
16. 16.🧩 Meera is 9 years old. Rohan is 8 years older than Meera. How old is Rohan? (a) 18 (b) 8 (c) 17 (d) not enough info
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
21. 21.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
22. 22.🧩 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
23. 23.🧩 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
24. 24.🧩 Ishaan is 11 years old. Kabir is 2 years older than Ishaan. How old is Kabir? (a) 14 (b) 13 (c) not enough info (d) 2
25. 25.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
26. 26.🧩 Rohan is 9 years old. Vihaan is older than Rohan. How old is Vihaan? (a) 10 (b) not enough info (c) 11 (d) 14
27. 27.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
28. 28.🧩 A box has 4 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 16 (c) 8 (d) 20
29. 29.🧩 Ananya bought 4 markers and a water bottle for ₹80 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹80 (c) ₹20 (d) ₹76
30. 30.🧩 Aarav is 9 years old. Kabir is 9 years older than Aarav. How old is Kabir? (a) 19 (b) 18 (c) not enough info (d) 9
31. 31.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 2 PM
32. 32.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
33. 33.🧩 Aarav bought 2 kites for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹110 (c) not enough info (d) ₹55
34. 34.🧩 Vihaan is 10 years old. Aarav is 9 years older than Vihaan. How old is Aarav? (a) 19 (b) 20 (c) not enough info (d) 9
35. 35.🧩 Ananya is 9 years old. Aarav is 9 years older than Ananya. How old is Aarav? (a) 18 (b) 9 (c) 19 (d) not enough info
36. 36.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 7 (c) not enough info (d) 14
37. 37.🧩 Ananya bought 5 markers for ₹125 in all. Each marker cost the same. What did one marker cost? (a) ₹125 (b) ₹30 (c) ₹25 (d) not enough info
38. 38.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 40 (d) 4
39. 39.🧩 Vihaan bought 2 mangoes and a bag for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹168 (b) not enough info (c) ₹170 (d) ₹85
40. 40.🧩 Rohan is 6 years old. Nisha is 4 years older than Rohan. How old is Nisha? (a) 11 (b) 4 (c) not enough info (d) 10

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