Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 840 · 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? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Rohan is 9 years old. Aarav is older than Rohan. How old is Aarav? (a) not enough info (b) 11 (c) 10 (d) 14
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
7. 7.🧩 Aarav is 7 years old. Tara is 3 years older than Aarav. How old is Tara? (a) 11 (b) not enough info (c) 3 (d) 10
8. 8.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 2 PM
9. 9.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
10. 10.🧩 A box has 4 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 11 (b) not enough info (c) 35 (d) 28
11. 11.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 9 (b) 24 (c) 20 (d) not enough info
12. 12.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
13. 13.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
14. 14.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
16. 16.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
17. 17.🧩 Meera is 8 years old. Arjun is 3 years older than Meera. How old is Arjun? (a) not enough info (b) 12 (c) 11 (d) 3
18. 18.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
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.🧩 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.🧩 A box has 5 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 36 (b) 11 (c) 30 (d) not enough info
22. 22.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
23. 23.🧩 Arjun bought 5 balls and a lunch box for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹265 (b) ₹270 (c) not enough info (d) ₹54
24. 24.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
26. 26.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 24 (c) 9 (d) 20
27. 27.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
28. 28.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 5 PM
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
30. 30.🥭 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
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
33. 33.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) 32 (b) not enough info (c) 11 (d) 28
34. 34.🧩 Tara is 11 years old. Meera is older than Tara. How old is Meera? (a) 12 (b) 16 (c) not enough info (d) 13
35. 35.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
36. 36.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
37. 37.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
38. 38.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
39. 39.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 50 (b) 10 (c) 5 (d) not enough info
40. 40.🧩 Kabir is 7 years old. Meera is older than Kabir. How old is Meera? (a) 12 (b) 9 (c) not enough info (d) 8

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