Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 242 · 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 asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
7. 7.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 6 PM
8. 8.📊 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
9. 9.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
10. 10.🧩 Tara is 9 years old. Aarav is older than Tara. How old is Aarav? (a) 14 (b) 11 (c) not enough info (d) 10
11. 11.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
12. 12.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 4 PM (d) 5 PM
13. 13.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
14. 14.🧩 A box has 5 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 36 (c) 30 (d) 11
15. 15.🧩 A box has 3 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 9 (b) not enough info (c) 18 (d) 24
16. 16.🧩 Kabir is 7 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 12 (b) not enough info (c) 9 (d) 8
17. 17.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) not enough info (b) 18 (c) 9 (d) 24
18. 18.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
19. 19.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
20. 20.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
21. 21.🧩 Ishaan is 6 years old. Meera is older than Ishaan. How old is Meera? (a) not enough info (b) 7 (c) 11 (d) 8
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Kabir is 10 years old. Meera is older than Kabir. How old is Meera? (a) 11 (b) 15 (c) 12 (d) not enough info
24. 24.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 35 (b) not enough info (c) 12 (d) 40
25. 25.🧩 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
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
27. 27.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
30. 30.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Vihaan bought 5 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) not enough info (c) ₹15 (d) ₹20
33. 33.🧩 Ishaan bought 6 mangoes for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) not enough info (c) ₹150 (d) ₹25
34. 34.🧩 Ishaan bought 6 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) not enough info (c) ₹60 (d) ₹10
35. 35.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 3 PM
36. 36.🧩 Kabir bought 6 markers for ₹270 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹50 (c) ₹45 (d) ₹270
37. 37.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 9 PM (d) not enough info
38. 38.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Meera bought 3 balls and a cap for ₹125 in all. Each ball cost the same. What did one ball cost? (a) ₹122 (b) ₹125 (c) not enough info (d) ₹41
40. 40.🧩 Rohan bought 5 balls for ₹225 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹45 (c) ₹225 (d) ₹50

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