Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 244 · 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.🧩 A box has 3 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 12 (b) 27 (c) 36 (d) not enough info
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
3. 3.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
4. 4.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
5. 5.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
7. 7.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
8. 8.🥭 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
9. 9.🧩 Ananya bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) ₹50 (c) not enough info (d) ₹55
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
11. 11.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) not enough info (b) 90 (c) 9 (d) 18
12. 12.🧩 A box has 7 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 28 (b) 32 (c) 11 (d) not enough info
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
14. 14.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
15. 15.🧩 Diya is 9 years old. Ananya is older than Diya. How old is Ananya? (a) not enough info (b) 14 (c) 11 (d) 10
16. 16.🧩 Aarav is 8 years old. Ananya is 3 years older than Aarav. How old is Ananya? (a) not enough info (b) 12 (c) 3 (d) 11
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
18. 18.🧩 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
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
20. 20.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
21. 21.🧩 Tara is 11 years old. Vihaan is older than Tara. How old is Vihaan? (a) not enough info (b) 16 (c) 12 (d) 13
22. 22.🧩 Aarav is 7 years old. Rohan is older than Aarav. How old is Rohan? (a) 8 (b) 9 (c) not enough info (d) 12
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
24. 24.🧩 A box has 5 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 35 (b) not enough info (c) 42 (d) 12
25. 25.🧩 Rohan bought 2 balls and a water bottle for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹80 (b) ₹40 (c) not enough info (d) ₹78
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
27. 27.🧩 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
28. 28.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
29. 29.🧩 Ananya bought 5 mangoes and a cap for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) not enough info (c) ₹80 (d) ₹16
30. 30.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
31. 31.🧩 A box has 5 rows of apples, with 8 in each row. How many apples are in the box? (a) 13 (b) 48 (c) 40 (d) not enough info
32. 32.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Arjun is 6 years old. Aarav is 8 years older than Arjun. How old is Aarav? (a) 15 (b) not enough info (c) 8 (d) 14
34. 34.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
36. 36.🧩 A box has 8 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 32 (b) 36 (c) 12 (d) not enough info
37. 37.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
38. 38.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 28 (b) not enough info (c) 10 (d) 21
39. 39.🧩 Tara bought 6 balls and a cap for ₹350 in all. Each ball cost the same. What did one ball cost? (a) ₹344 (b) ₹58 (c) not enough info (d) ₹350
40. 40.🧩 Ananya bought 3 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹65 (c) ₹180 (d) ₹60

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