Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 57 · 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: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
2. 2.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
3. 3.🧩 Kabir is 8 years old. Ishaan is 2 years older than Kabir. How old is Ishaan? (a) 2 (b) 10 (c) not enough info (d) 11
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, it is certain (d) yes, mangoes match
5. 5.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
6. 6.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
7. 7.🧩 Ananya bought 2 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹100 (b) ₹50 (c) ₹55 (d) not enough info
8. 8.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
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.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 3 PM (d) 7 PM
11. 11.🧩 Tara bought 3 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) not enough info (c) ₹150 (d) ₹50
12. 12.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
13. 13.🧩 Rohan bought 4 markers and a cap for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹216 (b) not enough info (c) ₹220 (d) ₹55
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
15. 15.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
16. 16.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 5 PM (c) 9 PM (d) not enough info
17. 17.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
18. 18.🧩 Tara bought 2 mangoes and a lunch box for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹120 (c) ₹60 (d) ₹118
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
20. 20.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) 80 (c) 16 (d) not enough info
21. 21.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
22. 22.🧩 Ananya bought 3 notebooks for ₹45 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹20 (d) ₹45
23. 23.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Saanvi is 11 years old. Aarav is older than Saanvi. How old is Aarav? (a) 12 (b) 13 (c) not enough info (d) 16
26. 26.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Vihaan bought 3 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹75 (b) ₹30 (c) not enough info (d) ₹25
29. 29.🧩 A box has 6 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 54 (b) 63 (c) 15 (d) not enough info
30. 30.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
31. 31.📊 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
32. 32.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
33. 33.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
34. 34.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
35. 35.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Tara bought 4 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹80 (c) ₹25 (d) not enough info
37. 37.🧩 Ishaan is 9 years old. Tara is older than Ishaan. How old is Tara? (a) 14 (b) not enough info (c) 11 (d) 10
38. 38.🧩 Vihaan is 9 years old. Meera is 8 years older than Vihaan. How old is Meera? (a) 18 (b) 8 (c) 17 (d) not enough info
39. 39.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
40. 40.🧩 A box has 4 rows of apples, with 5 in each row. How many apples are in the box? (a) 9 (b) 25 (c) not enough info (d) 20

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