Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 671 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
2. 2.🧩 Saanvi bought 5 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) ₹40 (c) ₹45 (d) not enough info
3. 3.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
4. 4.🧩 Ananya bought 4 notebooks and a water bottle for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹32 (b) ₹130 (c) ₹126 (d) not enough info
5. 5.🧩 Kabir is 11 years old. Arjun is older than Kabir. How old is Arjun? (a) 16 (b) not enough info (c) 12 (d) 13
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
7. 7.🧩 Tara bought 3 markers and a bag for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹130 (b) ₹43 (c) not enough info (d) ₹127
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
9. 9.🧩 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
10. 10.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 30 (c) 11 (d) 35
11. 11.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 4 PM
12. 12.🧩 Saanvi is 12 years old. Diya is older than Saanvi. How old is Diya? (a) 17 (b) not enough info (c) 14 (d) 13
13. 13.🧩 Vihaan is 6 years old. Kabir is older than Vihaan. How old is Kabir? (a) 7 (b) 11 (c) 8 (d) not enough info
14. 14.🧩 Nisha bought 3 notebooks and a cap for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹33 (b) ₹97 (c) ₹100 (d) not enough info
15. 15.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
18. 18.🧩 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
19. 19.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
20. 20.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Saanvi bought 4 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) not enough info (c) ₹140 (d) ₹136
22. 22.🧩 Aarav is 10 years old. Rohan is 5 years older than Aarav. How old is Rohan? (a) 15 (b) 16 (c) 5 (d) not enough info
23. 23.🧩 Kabir is 10 years old. Meera is 4 years older than Kabir. How old is Meera? (a) not enough info (b) 14 (c) 15 (d) 4
24. 24.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
25. 25.🧩 Kabir is 7 years old. Aarav is 2 years older than Kabir. How old is Aarav? (a) 9 (b) not enough info (c) 2 (d) 10
26. 26.🥭 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
27. 27.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
28. 28.🧩 A box has 3 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 27 (c) 36 (d) 12
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Saanvi bought 4 balls and a water bottle for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹22 (b) ₹86 (c) not enough info (d) ₹90
32. 32.🧩 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
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
34. 34.🧩 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
35. 35.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 2 PM
36. 36.🧩 A box has 7 rows of guavas, with 8 in each row. How many guavas are in the box? (a) not enough info (b) 15 (c) 56 (d) 64
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Ishaan bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹120 (c) ₹65 (d) not enough info
39. 39.🧩 Vihaan is 12 years old. Nisha is older than Vihaan. How old is Nisha? (a) 13 (b) 17 (c) 14 (d) not enough info
40. 40.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info

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