Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 892 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
8. 8.🧩 A box has 6 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 54 (b) 15 (c) 63 (d) not enough info
9. 9.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 14 (b) 49 (c) not enough info (d) 56
10. 10.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
15. 15.🧩 Vihaan is 9 years old. Nisha is older than Vihaan. How old is Nisha? (a) 10 (b) not enough info (c) 11 (d) 14
16. 16.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Kabir bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹60 (c) not enough info (d) ₹35
18. 18.🧩 Arjun is 9 years old. Aarav is older than Arjun. How old is Aarav? (a) 10 (b) 11 (c) 14 (d) not enough info
19. 19.🧩 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
20. 20.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 7 PM (c) 5 PM (d) not enough info
21. 21.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Diya bought 2 pens and a bag for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹70 (c) ₹68 (d) not enough info
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
24. 24.🧩 A box has 5 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 42 (c) 12 (d) 35
25. 25.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
26. 26.🧩 Ananya is 6 years old. Nisha is older than Ananya. How old is Nisha? (a) 7 (b) 11 (c) not enough info (d) 8
27. 27.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
28. 28.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 8 PM (d) 9 PM
29. 29.🧩 A box has 3 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 16 (c) 12 (d) 7
30. 30.🧩 Aarav is 9 years old. Diya is older than Aarav. How old is Diya? (a) 10 (b) not enough info (c) 11 (d) 14
31. 31.🧩 Nisha bought 5 kites and a lunch box for ₹250 in all. Each kite cost the same. What did one kite cost? (a) ₹245 (b) ₹250 (c) ₹50 (d) not enough info
32. 32.🧩 Meera is 7 years old. Rohan is 2 years older than Meera. How old is Rohan? (a) 2 (b) not enough info (c) 9 (d) 10
33. 33.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) no, check more (d) yes, it is certain
34. 34.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) not enough info (d) 6 PM
35. 35.🧩 Vihaan is 9 years old. Arjun is older than Vihaan. How old is Arjun? (a) not enough info (b) 10 (c) 14 (d) 11
36. 36.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
37. 37.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
38. 38.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
39. 39.🧩 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
40. 40.🧩 Tara bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹10 (b) ₹15 (c) not enough info (d) ₹20

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