Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 898 · 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.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
3. 3.🧩 A box has 4 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 10 (b) not enough info (c) 30 (d) 24
4. 4.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
6. 6.🧩 Saanvi is 8 years old. Rohan is older than Saanvi. How old is Rohan? (a) 9 (b) 10 (c) 13 (d) not enough info
7. 7.🧩 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
8. 8.🧩 A box has 6 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 36 (c) 12 (d) 42
9. 9.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
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.🧩 Diya is 6 years old. Ananya is older than Diya. How old is Ananya? (a) 8 (b) 11 (c) 7 (d) not enough info
12. 12.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
13. 13.🧩 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
14. 14.🧩 A box has 7 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 48 (c) 13 (d) 42
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
16. 16.🧩 A box has 5 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 42 (c) 12 (d) 35
17. 17.🧩 Nisha is 7 years old. Kabir is 8 years older than Nisha. How old is Kabir? (a) 8 (b) 15 (c) 16 (d) not enough info
18. 18.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
19. 19.🧩 Meera bought 6 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹25 (c) ₹150 (d) not enough info
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
21. 21.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
22. 22.🧩 A box has 4 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 45 (b) not enough info (c) 13 (d) 36
23. 23.🧩 Tara is 11 years old. Kabir is 8 years older than Tara. How old is Kabir? (a) not enough info (b) 20 (c) 8 (d) 19
24. 24.🧩 A box has 5 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 12 (b) 42 (c) not enough info (d) 35
25. 25.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
26. 26.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 7 PM (c) 6 PM (d) not enough info
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
28. 28.🧩 Arjun bought 6 notebooks and a bag for ₹190 in all. Each notebook cost the same. What did one notebook cost? (a) ₹190 (b) ₹31 (c) not enough info (d) ₹184
29. 29.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
30. 30.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
32. 32.🧩 Tara is 10 years old. Aarav is 7 years older than Tara. How old is Aarav? (a) 17 (b) not enough info (c) 7 (d) 18
33. 33.🧩 Tara bought 4 kites and a cap for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹37 (b) ₹150 (c) ₹146 (d) not enough info
34. 34.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 27 (b) not enough info (c) 12 (d) 36
35. 35.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
36. 36.🧩 Aarav is 8 years old. Meera is older than Aarav. How old is Meera? (a) 10 (b) not enough info (c) 13 (d) 9
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
38. 38.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 9 PM (d) 6 PM
39. 39.🧩 Meera bought 4 pens and a lunch box for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹176 (b) not enough info (c) ₹180 (d) ₹45
40. 40.🧩 A box has 3 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 10 (b) 21 (c) not enough info (d) 28

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