Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 841 · 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.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
2. 2.🧩 Saanvi bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹25 (c) ₹20 (d) ₹40
3. 3.🧩 Ananya bought 3 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹30 (c) ₹10 (d) not enough info
4. 4.🧩 Meera is 6 years old. Diya is 8 years older than Meera. How old is Diya? (a) 8 (b) not enough info (c) 15 (d) 14
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
6. 6.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 35 (b) not enough info (c) 11 (d) 30
7. 7.🧩 Kabir bought 6 kites and a cap for ₹320 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹320 (c) ₹314 (d) ₹53
8. 8.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
9. 9.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
10. 10.🧩 A box has 3 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 32 (b) not enough info (c) 11 (d) 24
11. 11.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 50 (c) not enough info (d) 10
12. 12.🧩 Saanvi bought 2 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹20 (d) ₹15
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Rohan is 10 years old. Aarav is older than Rohan. How old is Aarav? (a) 15 (b) not enough info (c) 12 (d) 11
15. 15.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Tara is 6 years old. Saanvi is older than Tara. How old is Saanvi? (a) 11 (b) not enough info (c) 7 (d) 8
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
19. 19.🧩 A box has 5 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 14 (b) not enough info (c) 45 (d) 54
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
21. 21.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
22. 22.🧩 Vihaan bought 2 kites and a bag for ₹90 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹88 (c) ₹45 (d) ₹90
23. 23.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 2 PM (c) 3 PM (d) 4 PM
24. 24.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) no, check more (d) yes, it is certain
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
26. 26.🧩 Ishaan bought 3 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹25 (c) not enough info (d) ₹20
27. 27.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
28. 28.🧩 Aarav is 8 years old. Tara is older than Aarav. How old is Tara? (a) 10 (b) 9 (c) 13 (d) not enough info
29. 29.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
30. 30.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
32. 32.🧩 Arjun bought 3 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹180 (b) ₹65 (c) not enough info (d) ₹60
33. 33.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
34. 34.🧩 Nisha is 7 years old. Diya is older than Nisha. How old is Diya? (a) 12 (b) not enough info (c) 9 (d) 8
35. 35.📊 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
36. 36.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
37. 37.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 9 (b) 24 (c) 20 (d) not enough info
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
39. 39.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
40. 40.🧩 Tara is 7 years old. Nisha is older than Tara. How old is Nisha? (a) 12 (b) 8 (c) 9 (d) not enough info

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