Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 171 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Kabir bought 4 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹120 (b) ₹35 (c) not enough info (d) ₹30
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
4. 4.🧩 A box has 5 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 12 (b) 42 (c) 35 (d) not enough info
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
7. 7.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 20 (b) 24 (c) not enough info (d) 9
8. 8.🧩 A box has 8 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 15 (b) 63 (c) not enough info (d) 56
9. 9.🧩 Ishaan bought 2 kites for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹80 (d) ₹45
10. 10.🧩 Diya is 11 years old. Ananya is 6 years older than Diya. How old is Ananya? (a) 18 (b) not enough info (c) 6 (d) 17
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
14. 14.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
16. 16.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 8 (d) 80
17. 17.🥭 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) no, check more (c) yes, mangoes match (d) no mango is sweet
18. 18.🧩 Meera bought 6 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) ₹20 (c) not enough info (d) ₹25
19. 19.🧩 Rohan is 12 years old. Tara is older than Rohan. How old is Tara? (a) 17 (b) 14 (c) not enough info (d) 13
20. 20.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
22. 22.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
23. 23.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
24. 24.🧩 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
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
26. 26.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
27. 27.🧩 Meera bought 4 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹10 (c) ₹15 (d) not enough info
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Ananya is 9 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 11 (b) not enough info (c) 14 (d) 10
30. 30.🐕 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
31. 31.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
32. 32.🧩 A box has 4 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 32 (d) 40
33. 33.🧩 Arjun is 12 years old. Diya is older than Arjun. How old is Diya? (a) 14 (b) 13 (c) 17 (d) not enough info
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
35. 35.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
36. 36.🧩 Arjun is 6 years old. Ananya is older than Arjun. How old is Ananya? (a) 8 (b) 11 (c) 7 (d) not enough info
37. 37.🧩 Arjun is 10 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 12 (b) 15 (c) not enough info (d) 11
38. 38.🧩 Kabir bought 6 notebooks for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) ₹360 (b) ₹60 (c) not enough info (d) ₹65
39. 39.🧩 Tara is 10 years old. Rohan is older than Tara. How old is Rohan? (a) 11 (b) 15 (c) not enough info (d) 12
40. 40.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) not enough info (c) 14 (d) 70

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