Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 800 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
2. 2.True or false: “One student said the canteen food was cold, so it is always cold.” does not give 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.🧩 Ananya is 6 years old. Arjun is 9 years older than Ananya. How old is Arjun? (a) 9 (b) 16 (c) not enough info (d) 15
5. 5.🧩 Tara is 12 years old. Kabir is older than Tara. How old is Kabir? (a) 14 (b) 17 (c) not enough info (d) 13
6. 6.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Arjun bought 3 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) ₹20 (c) ₹60 (d) not enough info
11. 11.🧩 Saanvi bought 6 notebooks and a lunch box for ₹260 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹254 (c) ₹260 (d) ₹43
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
13. 13.🧩 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
14. 14.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Arjun bought 4 kites and a water bottle for ₹280 in all. Each kite cost the same. What did one kite cost? (a) ₹70 (b) not enough info (c) ₹276 (d) ₹280
16. 16.🧩 Aarav is 12 years old. Diya is 8 years older than Aarav. How old is Diya? (a) not enough info (b) 20 (c) 8 (d) 21
17. 17.🧩 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
18. 18.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
19. 19.🧩 Meera is 8 years old. Aarav is older than Meera. How old is Aarav? (a) not enough info (b) 9 (c) 13 (d) 10
20. 20.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
22. 22.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
23. 23.🧩 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
24. 24.🧩 A box has 5 rows of apples, with 5 in each row. How many apples are in the box? (a) 25 (b) 30 (c) 10 (d) not enough info
25. 25.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 12 (b) 35 (c) 40 (d) not enough info
26. 26.🧩 Diya is 9 years old. Ishaan is older than Diya. How old is Ishaan? (a) 14 (b) not enough info (c) 10 (d) 11
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
29. 29.🥭 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, check more (c) yes, it is certain (d) no mango is sweet
30. 30.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
33. 33.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 4 PM (c) not enough info (d) 8 PM
34. 34.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 49 (b) 42 (c) 13 (d) not enough info
35. 35.🧩 Meera bought 2 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹100 (b) ₹55 (c) not enough info (d) ₹50
36. 36.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
37. 37.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
38. 38.🧩 A box has 6 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 54 (b) 63 (c) not enough info (d) 15
39. 39.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
40. 40.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 6 PM (c) 10 PM (d) not enough info

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