Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 141 · 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.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
2. 2.🐕 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
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
4. 4.🧩 Vihaan bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹45 (c) ₹20 (d) ₹15
5. 5.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
6. 6.🧩 Diya is 11 years old. Nisha is 5 years older than Diya. How old is Nisha? (a) 5 (b) 16 (c) not enough info (d) 17
7. 7.🧩 Kabir is 7 years old. Nisha is older than Kabir. How old is Nisha? (a) 9 (b) 12 (c) not enough info (d) 8
8. 8.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
9. 9.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
12. 12.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
13. 13.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
14. 14.🧩 Ishaan is 9 years old. Arjun is older than Ishaan. How old is Arjun? (a) 11 (b) 10 (c) 14 (d) not enough info
15. 15.🧩 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
16. 16.🧩 Vihaan bought 2 notebooks and a lunch box for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹88 (b) ₹90 (c) ₹45 (d) not enough info
17. 17.🧩 Kabir is 10 years old. Rohan is 4 years older than Kabir. How old is Rohan? (a) 4 (b) not enough info (c) 14 (d) 15
18. 18.🥭 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) yes, mangoes match (d) no mango is sweet
19. 19.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
20. 20.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
22. 22.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
24. 24.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) not enough info (c) 11 (d) 30
25. 25.🧩 A box has 8 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 14 (b) 48 (c) 54 (d) not enough info
26. 26.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
27. 27.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
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
30. 30.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 10 PM
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
32. 32.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Tara bought 6 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹25 (c) ₹20 (d) not enough info
34. 34.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
35. 35.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
36. 36.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) 7 PM (d) not enough info
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
39. 39.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
40. 40.🧩 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

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