Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 516 · 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) a rumour (b) a guess (c) a loud opinion (d) facts that support it
2. 2.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
3. 3.🧩 Tara bought 4 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹45 (c) ₹180 (d) not enough info
4. 4.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
5. 5.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 2 PM (c) 3 PM (d) 4 PM
6. 6.🧩 Kabir is 11 years old. Meera is 3 years older than Kabir. How old is Meera? (a) not enough info (b) 3 (c) 15 (d) 14
7. 7.🧩 Rohan is 6 years old. Meera is 9 years older than Rohan. How old is Meera? (a) 9 (b) 16 (c) 15 (d) not enough info
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
10. 10.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
11. 11.🧩 A box has 7 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 11 (b) 32 (c) 28 (d) not enough info
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
13. 13.🧩 Kabir bought 5 markers for ₹125 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹25 (c) ₹125 (d) not enough info
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Vihaan bought 2 balls and a cap for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹120 (d) ₹118
16. 16.🧩 A box has 6 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 14 (b) not enough info (c) 48 (d) 56
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
18. 18.🧩 Ishaan is 6 years old. Rohan is older than Ishaan. How old is Rohan? (a) 8 (b) 11 (c) 7 (d) not enough info
19. 19.🥭 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) no, check more (c) yes, mangoes match (d) no mango is sweet
20. 20.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Kabir bought 4 mangoes and a cap for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹160 (b) ₹156 (c) not enough info (d) ₹40
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
23. 23.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 5 (d) 50
24. 24.🧩 Kabir is 6 years old. Meera is older than Kabir. How old is Meera? (a) 11 (b) 8 (c) not enough info (d) 7
25. 25.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
26. 26.🧩 Aarav is 9 years old. Tara is older than Aarav. How old is Tara? (a) 10 (b) not enough info (c) 14 (d) 11
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
29. 29.🧩 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
30. 30.🧩 Tara bought 3 mangoes and a water bottle for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹240 (b) ₹80 (c) ₹237 (d) not enough info
31. 31.🧩 Meera is 6 years old. Aarav is 2 years older than Meera. How old is Aarav? (a) 2 (b) not enough info (c) 9 (d) 8
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Meera bought 2 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) not enough info (c) ₹90 (d) ₹45
34. 34.🧩 Tara is 6 years old. Ananya is 4 years older than Tara. How old is Ananya? (a) not enough info (b) 4 (c) 10 (d) 11
35. 35.🧩 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
36. 36.🧩 Vihaan bought 6 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹150
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
38. 38.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 5 PM
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
40. 40.🧩 Nisha is 12 years old. Aarav is 8 years older than Nisha. How old is Aarav? (a) 8 (b) 20 (c) 21 (d) not enough info

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