Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 888 · 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.🧩 Rohan is 10 years old. Ananya is 5 years older than Rohan. How old is Ananya? (a) 16 (b) 5 (c) not enough info (d) 15
2. 2.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) yes, mangoes match (d) no mango is sweet
3. 3.🧩 Aarav bought 2 notebooks and a bag for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) ₹150 (c) not enough info (d) ₹148
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
6. 6.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
7. 7.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 35 (b) 11 (c) 30 (d) not enough info
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
9. 9.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
10. 10.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
11. 11.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Meera is 9 years old. Ishaan is older than Meera. How old is Ishaan? (a) 14 (b) not enough info (c) 10 (d) 11
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
15. 15.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
16. 16.🧩 Ananya bought 5 balls and a cap for ₹280 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹280 (c) ₹56 (d) ₹275
17. 17.🧩 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
18. 18.🧩 Rohan bought 2 pens and a lunch box for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) ₹75 (c) ₹148 (d) not enough info
19. 19.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 14 (b) 56 (c) not enough info (d) 49
20. 20.🧩 Vihaan is 9 years old. Meera is older than Vihaan. How old is Meera? (a) 11 (b) 10 (c) 14 (d) not enough info
21. 21.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
22. 22.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
23. 23.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
24. 24.🧩 Tara is 11 years old. Vihaan is older than Tara. How old is Vihaan? (a) 16 (b) 13 (c) 12 (d) not enough info
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 2 PM
28. 28.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
29. 29.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 5 PM
30. 30.🧩 Tara is 7 years old. Nisha is older than Tara. How old is Nisha? (a) not enough info (b) 9 (c) 12 (d) 8
31. 31.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM
32. 32.🧩 A box has 5 rows of apples, with 8 in each row. How many apples are in the box? (a) 13 (b) not enough info (c) 40 (d) 48
33. 33.🧩 Vihaan bought 2 mangoes and a water bottle for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹160 (b) not enough info (c) ₹80 (d) ₹158
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
35. 35.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
36. 36.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
37. 37.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 9 PM (c) 5 PM (d) not enough info
38. 38.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
39. 39.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 8 PM
40. 40.🧩 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

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