Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 728 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
2. 2.🧩 Ishaan bought 5 balls and a water bottle for ₹335 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹330 (c) ₹67 (d) ₹335
3. 3.🧩 Kabir bought 2 pens and a water bottle for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹90 (b) not enough info (c) ₹88 (d) ₹45
4. 4.🧩 Diya bought 5 markers and a lunch box for ₹145 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹145 (c) ₹29 (d) ₹140
5. 5.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
9. 9.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) 72 (b) 16 (c) 64 (d) not enough info
10. 10.🧩 Nisha is 7 years old. Vihaan is 2 years older than Nisha. How old is Vihaan? (a) 10 (b) 2 (c) not enough info (d) 9
11. 11.🥭 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 mango is sweet (c) yes, mangoes match (d) no, check more
12. 12.🧩 Nisha bought 2 balls and a bag for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹80 (b) ₹158 (c) not enough info (d) ₹160
13. 13.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
15. 15.🧩 Tara bought 3 pens and a lunch box for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹197 (b) ₹200 (c) not enough info (d) ₹66
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Diya is 8 years old. Nisha is 3 years older than Diya. How old is Nisha? (a) 12 (b) not enough info (c) 11 (d) 3
19. 19.🧩 Ananya bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) ₹30 (c) not enough info (d) ₹25
20. 20.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
21. 21.🧩 Meera is 6 years old. Kabir is 9 years older than Meera. How old is Kabir? (a) 15 (b) not enough info (c) 16 (d) 9
22. 22.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
23. 23.🧩 Kabir is 10 years old. Ishaan is 3 years older than Kabir. How old is Ishaan? (a) 3 (b) 14 (c) not enough info (d) 13
24. 24.🧩 Tara bought 5 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹150 (b) ₹35 (c) ₹30 (d) not enough info
25. 25.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
28. 28.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
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.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
31. 31.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) not enough info (b) 42 (c) 48 (d) 13
32. 32.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
34. 34.🧩 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
35. 35.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 8 PM
36. 36.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 48 (b) not enough info (c) 42 (d) 13
37. 37.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
38. 38.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
39. 39.🧩 Arjun is 7 years old. Kabir is older than Arjun. How old is Kabir? (a) 8 (b) 12 (c) 9 (d) not enough info
40. 40.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 12 (d) 7

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