Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 43 · 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.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
3. 3.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) 7 PM (d) not enough info
6. 6.🧩 Diya is 11 years old. Nisha is 7 years older than Diya. How old is Nisha? (a) not enough info (b) 18 (c) 19 (d) 7
7. 7.🧩 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
8. 8.📊 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
9. 9.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
10. 10.🧩 Kabir bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹15 (c) not enough info (d) ₹10
11. 11.🧩 Vihaan bought 4 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹80
12. 12.🧩 Diya bought 2 balls and a cap for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹80 (b) ₹160 (c) not enough info (d) ₹158
13. 13.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
15. 15.🧩 Ishaan is 9 years old. Kabir is 3 years older than Ishaan. How old is Kabir? (a) 13 (b) 3 (c) not enough info (d) 12
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
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 of mangoes has 6 in each row. How many mangoes are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
20. 20.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
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.🧩 Vihaan bought 6 markers for ₹360 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹360 (c) not enough info (d) ₹65
24. 24.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
25. 25.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 72 (b) 63 (c) 16 (d) not enough info
26. 26.🧩 Arjun bought 2 notebooks and a lunch box for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) ₹150 (c) ₹148 (d) not enough info
27. 27.🧩 Aarav bought 6 notebooks and a bag for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹21 (b) ₹130 (c) not enough info (d) ₹124
28. 28.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
29. 29.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
30. 30.🧩 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
31. 31.🧩 Rohan is 12 years old. Ananya is 5 years older than Rohan. How old is Ananya? (a) 18 (b) 17 (c) not enough info (d) 5
32. 32.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) 8 (c) not enough info (d) 16
33. 33.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 5 (d) 50
34. 34.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) 12 (b) 16 (c) 7 (d) not enough info
35. 35.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 90 (b) not enough info (c) 9 (d) 18
36. 36.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
37. 37.🧩 A box has 7 rows of eggs, with 4 in each row. How many eggs are in the box? (a) not enough info (b) 11 (c) 32 (d) 28
38. 38.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) not enough info (c) 6 PM (d) 5 PM
39. 39.🧩 Diya is 10 years old. Meera is 3 years older than Diya. How old is Meera? (a) not enough info (b) 14 (c) 13 (d) 3
40. 40.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 16 (c) not enough info (d) 80

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