Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 987 · 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.🧩 Aarav bought 2 balls for ₹70 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) not enough info (c) ₹70 (d) ₹35
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.🧩 A box has 5 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 30 (b) 11 (c) 36 (d) not enough info
4. 4.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
5. 5.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) 48 (b) 56 (c) not enough info (d) 14
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
9. 9.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 3 PM (d) 7 PM
10. 10.🧩 Diya bought 4 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹20 (c) ₹25 (d) ₹80
11. 11.🧩 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
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
13. 13.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
14. 14.🧩 Aarav is 6 years old. Saanvi is 3 years older than Aarav. How old is Saanvi? (a) 9 (b) not enough info (c) 10 (d) 3
15. 15.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
16. 16.🧩 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
17. 17.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
18. 18.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
19. 19.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
23. 23.🧩 Vihaan is 10 years old. Ananya is 7 years older than Vihaan. How old is Ananya? (a) not enough info (b) 18 (c) 17 (d) 7
24. 24.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
26. 26.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
27. 27.🧩 Vihaan bought 6 notebooks and a cap for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹74 (b) ₹13 (c) ₹80 (d) not enough info
28. 28.🧩 Rohan bought 4 mangoes for ₹200 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹50 (c) ₹200 (d) ₹55
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
30. 30.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) not enough info (b) 18 (c) 9 (d) 90
31. 31.🧩 Saanvi is 12 years old. Vihaan is older than Saanvi. How old is Vihaan? (a) 17 (b) not enough info (c) 14 (d) 13
32. 32.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 5 PM
33. 33.🧩 Rohan is 8 years old. Saanvi is 5 years older than Rohan. How old is Saanvi? (a) 5 (b) not enough info (c) 14 (d) 13
34. 34.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
35. 35.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
37. 37.🧩 A box has 4 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 30 (b) 24 (c) 10 (d) not enough info
38. 38.🧩 Ishaan is 9 years old. Meera is older than Ishaan. How old is Meera? (a) 14 (b) 10 (c) 11 (d) not enough info
39. 39.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend

Free critical thinking lessons, practice and worksheets at talentjr.in/critical-thinking-for-kids