Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 456 · 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 checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
2. 2.🧩 A box has 8 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 81 (b) not enough info (c) 17 (d) 72
3. 3.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Diya is 12 years old. Tara is 2 years older than Diya. How old is Tara? (a) not enough info (b) 15 (c) 14 (d) 2
6. 6.🧩 A box has 7 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 13 (b) 48 (c) not enough info (d) 42
7. 7.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
8. 8.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 8 PM
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
10. 10.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 56 (b) not enough info (c) 14 (d) 49
11. 11.🧩 Rohan is 11 years old. Kabir is older than Rohan. How old is Kabir? (a) 12 (b) not enough info (c) 13 (d) 16
12. 12.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
13. 13.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
14. 14.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Ishaan is 7 years old. Meera is 9 years older than Ishaan. How old is Meera? (a) 16 (b) not enough info (c) 9 (d) 17
17. 17.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
18. 18.🧩 Kabir bought 6 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) not enough info (c) ₹15 (d) ₹10
19. 19.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
20. 20.🧩 Ananya bought 6 pens and a lunch box for ₹290 in all. Each pen cost the same. What did one pen cost? (a) ₹48 (b) not enough info (c) ₹284 (d) ₹290
21. 21.🧩 Diya is 8 years old. Tara is 9 years older than Diya. How old is Tara? (a) 18 (b) 17 (c) not enough info (d) 9
22. 22.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
23. 23.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 10 (b) 24 (c) not enough info (d) 28
24. 24.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
25. 25.🧩 Ananya bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹240 (c) ₹60 (d) ₹65
26. 26.🧩 Vihaan is 7 years old. Diya is older than Vihaan. How old is Diya? (a) 8 (b) not enough info (c) 9 (d) 12
27. 27.🧩 Saanvi bought 2 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹35 (c) ₹30 (d) not enough info
28. 28.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 3 PM
29. 29.🧩 A box has 3 rows of apples, with 6 in each row. How many apples are in the box? (a) 9 (b) 24 (c) not enough info (d) 18
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
31. 31.🧩 A box has 8 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 72 (c) 16 (d) 64
32. 32.🧩 Arjun is 7 years old. Tara is older than Arjun. How old is Tara? (a) 12 (b) not enough info (c) 8 (d) 9
33. 33.🧩 Saanvi bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) not enough info (c) ₹100 (d) ₹20
34. 34.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM
35. 35.🧩 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
36. 36.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
37. 37.🧩 Diya bought 3 pens and a bag for ₹220 in all. Each pen cost the same. What did one pen cost? (a) ₹220 (b) ₹217 (c) not enough info (d) ₹73
38. 38.🧩 Arjun bought 2 pens and a bag for ₹90 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹88 (c) ₹45 (d) ₹90
39. 39.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
40. 40.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

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