Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 907 · 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) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
2. 2.🧩 Meera bought 6 notebooks and a bag for ₹390 in all. Each notebook cost the same. What did one notebook cost? (a) ₹384 (b) ₹65 (c) not enough info (d) ₹390
3. 3.🧩 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
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Kabir bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹60 (d) ₹15
6. 6.🧩 Tara is 9 years old. Meera is older than Tara. How old is Meera? (a) 14 (b) not enough info (c) 10 (d) 11
7. 7.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
8. 8.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
9. 9.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
10. 10.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) not enough info (c) 70 (d) 7
11. 11.🧩 Kabir bought 5 balls for ₹100 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹25 (d) ₹100
12. 12.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
13. 13.🧩 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
14. 14.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Ishaan is 11 years old. Meera is 9 years older than Ishaan. How old is Meera? (a) 21 (b) not enough info (c) 20 (d) 9
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
19. 19.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
20. 20.🧩 Tara is 7 years old. Diya is 6 years older than Tara. How old is Diya? (a) 13 (b) not enough info (c) 6 (d) 14
21. 21.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
24. 24.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
25. 25.🧩 Kabir bought 2 kites for ₹20 in all. Each kite cost the same. What did one kite cost? (a) ₹10 (b) ₹15 (c) ₹20 (d) not enough info
26. 26.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 48 (b) 54 (c) 14 (d) not enough info
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
29. 29.🧩 Meera bought 5 markers and a water bottle for ₹320 in all. Each marker cost the same. What did one marker cost? (a) ₹64 (b) ₹320 (c) ₹315 (d) not enough info
30. 30.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
31. 31.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
32. 32.🥭 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) no mango is sweet (d) yes, mangoes match
33. 33.🧩 Diya is 7 years old. Tara is 4 years older than Diya. How old is Tara? (a) 11 (b) not enough info (c) 4 (d) 12
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
35. 35.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Nisha bought 5 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹15 (c) not enough info (d) ₹10
37. 37.🧩 A box has 7 rows of apples, with 9 in each row. How many apples are in the box? (a) 63 (b) 16 (c) 72 (d) not enough info
38. 38.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 14 (b) not enough info (c) 54 (d) 48
39. 39.🧩 Meera bought 2 notebooks and a bag for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) ₹148 (c) ₹150 (d) not enough info
40. 40.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info

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