Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 145 · 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.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
3. 3.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) not enough info (c) 10 (d) 50
4. 4.🧩 Nisha is 8 years old. Meera is 7 years older than Nisha. How old is Meera? (a) not enough info (b) 7 (c) 15 (d) 16
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Arjun is 8 years old. Rohan is 6 years older than Arjun. How old is Rohan? (a) 14 (b) 15 (c) not enough info (d) 6
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
9. 9.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
10. 10.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 5 PM (d) 8 PM
11. 11.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM
12. 12.🧩 Saanvi is 6 years old. Diya is 9 years older than Saanvi. How old is Diya? (a) 15 (b) 16 (c) 9 (d) not enough info
13. 13.🥭 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
14. 14.🧩 A box has 5 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 11 (b) 36 (c) not enough info (d) 30
15. 15.🧩 Nisha bought 4 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹80 (c) not enough info (d) ₹20
16. 16.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
17. 17.🧩 Tara bought 5 kites and a water bottle for ₹70 in all. Each kite cost the same. What did one kite cost? (a) ₹65 (b) ₹70 (c) ₹14 (d) not enough info
18. 18.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
19. 19.🧩 A box has 4 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 16 (b) not enough info (c) 8 (d) 20
20. 20.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
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
22. 22.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 6 PM
23. 23.🧩 Meera is 10 years old. Kabir is older than Meera. How old is Kabir? (a) 11 (b) 12 (c) not enough info (d) 15
24. 24.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
25. 25.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
26. 26.📊 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
27. 27.🧩 Aarav bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹75 (c) ₹30 (d) not enough info
28. 28.🧩 Ananya bought 4 balls and a water bottle for ₹220 in all. Each ball cost the same. What did one ball cost? (a) ₹220 (b) ₹55 (c) ₹216 (d) not enough info
29. 29.🧩 Aarav is 9 years old. Saanvi is 6 years older than Aarav. How old is Saanvi? (a) not enough info (b) 16 (c) 15 (d) 6
30. 30.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
31. 31.🧩 A box has 8 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 48 (b) not enough info (c) 14 (d) 54
32. 32.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
33. 33.🧩 Diya is 6 years old. Arjun is older than Diya. How old is Arjun? (a) 7 (b) 11 (c) 8 (d) not enough info
34. 34.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
35. 35.🧩 A box has 6 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 42 (b) not enough info (c) 12 (d) 36
36. 36.🧩 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
37. 37.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 13 (b) 45 (c) not enough info (d) 36
38. 38.🧩 Meera bought 2 kites and a water bottle for ₹110 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹108 (c) ₹110 (d) ₹55
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False

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