Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 292 · 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.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
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
6. 6.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Ishaan is 11 years old. Nisha is older than Ishaan. How old is Nisha? (a) 13 (b) 16 (c) not enough info (d) 12
8. 8.🧩 Aarav bought 6 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹180 (c) not enough info (d) ₹35
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
11. 11.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
12. 12.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 2 PM
13. 13.🧩 Ishaan bought 3 pens and a water bottle for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹107 (b) not enough info (c) ₹36 (d) ₹110
14. 14.🧩 Vihaan is 10 years old. Meera is 9 years older than Vihaan. How old is Meera? (a) 19 (b) 9 (c) 20 (d) not enough info
15. 15.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
16. 16.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
17. 17.🧩 Ananya bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹15 (c) ₹20 (d) ₹60
18. 18.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
20. 20.🧩 Ananya is 9 years old. Diya is older than Ananya. How old is Diya? (a) 14 (b) not enough info (c) 10 (d) 11
21. 21.🧩 Aarav is 11 years old. Tara is 9 years older than Aarav. How old is Tara? (a) 21 (b) 20 (c) not enough info (d) 9
22. 22.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
23. 23.🧩 Diya is 8 years old. Vihaan is older than Diya. How old is Vihaan? (a) 10 (b) not enough info (c) 13 (d) 9
24. 24.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
25. 25.🧩 Arjun is 7 years old. Kabir is 2 years older than Arjun. How old is Kabir? (a) 10 (b) 2 (c) not enough info (d) 9
26. 26.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
27. 27.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
28. 28.🧩 A box has 4 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 20 (d) 16
29. 29.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) not enough info (c) 9 PM (d) 6 PM
30. 30.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
32. 32.🧩 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
33. 33.🧩 Vihaan is 8 years old. Diya is older than Vihaan. How old is Diya? (a) 10 (b) 9 (c) 13 (d) not enough info
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
35. 35.🧩 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
36. 36.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
37. 37.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
38. 38.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 3 PM
39. 39.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False

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