Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 926 · 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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
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.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
6. 6.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
7. 7.🧩 Diya bought 6 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹150 (c) ₹30 (d) ₹25
8. 8.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
9. 9.🧩 Nisha is 12 years old. Meera is older than Nisha. How old is Meera? (a) not enough info (b) 17 (c) 13 (d) 14
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Tara is 7 years old. Rohan is 7 years older than Tara. How old is Rohan? (a) not enough info (b) 14 (c) 7 (d) 15
12. 12.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
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Arjun bought 2 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹65 (c) ₹120 (d) ₹60
15. 15.🧩 Tara bought 6 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) not enough info (c) ₹15 (d) ₹10
16. 16.🧩 Vihaan is 12 years old. Aarav is 6 years older than Vihaan. How old is Aarav? (a) 18 (b) 6 (c) not enough info (d) 19
17. 17.🥭 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) yes, it is certain (c) no, check more (d) yes, mangoes match
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Diya bought 3 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹75 (c) ₹25 (d) ₹30
20. 20.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) not enough info (c) 8 (d) 4
21. 21.🧩 Ishaan is 10 years old. Aarav is older than Ishaan. How old is Aarav? (a) not enough info (b) 15 (c) 11 (d) 12
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
23. 23.🧩 Saanvi is 10 years old. Ishaan is 7 years older than Saanvi. How old is Ishaan? (a) 18 (b) not enough info (c) 7 (d) 17
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
26. 26.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
27. 27.🧩 Diya bought 4 kites and a lunch box for ₹280 in all. Each kite cost the same. What did one kite cost? (a) ₹276 (b) not enough info (c) ₹280 (d) ₹70
28. 28.🧩 Nisha bought 3 notebooks for ₹135 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹135 (c) not enough info (d) ₹45
29. 29.🧩 Vihaan is 7 years old. Ananya is 6 years older than Vihaan. How old is Ananya? (a) not enough info (b) 13 (c) 6 (d) 14
30. 30.🧩 Kabir is 7 years old. Vihaan is 7 years older than Kabir. How old is Vihaan? (a) 7 (b) 14 (c) 15 (d) not enough info
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
32. 32.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 9 (b) 18 (c) not enough info (d) 90
33. 33.🧩 Tara is 12 years old. Ishaan is older than Tara. How old is Ishaan? (a) 13 (b) 17 (c) 14 (d) not enough info
34. 34.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
35. 35.🧩 Tara is 6 years old. Vihaan is older than Tara. How old is Vihaan? (a) not enough info (b) 11 (c) 7 (d) 8
36. 36.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
37. 37.🧩 A box has 5 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 25 (b) 10 (c) 30 (d) not enough info
38. 38.🧩 Ishaan is 12 years old. Ananya is older than Ishaan. How old is Ananya? (a) 13 (b) not enough info (c) 14 (d) 17
39. 39.🧩 Aarav is 6 years old. Arjun is 7 years older than Aarav. How old is Arjun? (a) 7 (b) 14 (c) not enough info (d) 13
40. 40.🐕 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

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