Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 96 · 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.🧩 Rohan bought 5 balls and a water bottle for ₹320 in all. Each ball cost the same. What did one ball cost? (a) ₹320 (b) ₹64 (c) ₹315 (d) not enough info
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
4. 4.🥭 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 mango is sweet (c) no, check more (d) yes, mangoes match
5. 5.🧩 Kabir is 7 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 12 (b) 8 (c) not enough info (d) 9
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
7. 7.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
8. 8.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 6 PM
9. 9.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 9 (b) 25 (c) not enough info (d) 20
10. 10.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 40 (d) 4
11. 11.🧩 Ishaan bought 4 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹35 (c) not enough info (d) ₹120
12. 12.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 2 PM
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 4 PM
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
16. 16.🧩 Arjun bought 6 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) not enough info (c) ₹10 (d) ₹60
17. 17.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
19. 19.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
20. 20.🧩 Arjun bought 5 kites for ₹225 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹225 (c) ₹45 (d) ₹50
21. 21.🧩 Ananya is 9 years old. Kabir is 6 years older than Ananya. How old is Kabir? (a) not enough info (b) 6 (c) 15 (d) 16
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Aarav bought 4 balls and a water bottle for ₹250 in all. Each ball cost the same. What did one ball cost? (a) ₹62 (b) ₹246 (c) ₹250 (d) not enough info
24. 24.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
27. 27.🧩 Kabir is 9 years old. Diya is 8 years older than Kabir. How old is Diya? (a) not enough info (b) 18 (c) 8 (d) 17
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
29. 29.🧩 Kabir bought 2 markers and a water bottle for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹70 (b) ₹140 (c) not enough info (d) ₹138
30. 30.🧩 Aarav is 9 years old. Meera is older than Aarav. How old is Meera? (a) 14 (b) 10 (c) 11 (d) not enough info
31. 31.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
32. 32.🧩 Aarav bought 6 markers and a lunch box for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) not enough info (c) ₹174 (d) ₹180
33. 33.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
34. 34.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Vihaan is 6 years old. Arjun is 6 years older than Vihaan. How old is Arjun? (a) 6 (b) 13 (c) not enough info (d) 12
36. 36.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
37. 37.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
38. 38.🧩 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
39. 39.🧩 Meera bought 3 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹65 (b) ₹180 (c) ₹60 (d) not enough info
40. 40.🧩 Ananya bought 6 mangoes for ₹360 in all. Each mango cost the same. What did one mango cost? (a) ₹65 (b) ₹360 (c) ₹60 (d) not enough info

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