Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 51 · 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.🧩 Vihaan bought 3 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹90
2. 2.🧩 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
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
4. 4.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
5. 5.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
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
7. 7.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
8. 8.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 5 PM (d) 8 PM
9. 9.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
10. 10.🧩 A box has 6 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 14 (b) 48 (c) 56 (d) not enough info
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
13. 13.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Ishaan bought 5 balls and a lunch box for ₹220 in all. Each ball cost the same. What did one ball cost? (a) ₹44 (b) ₹215 (c) not enough info (d) ₹220
15. 15.🧩 A box has 4 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 25 (c) 9 (d) 20
16. 16.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Ishaan is 8 years old. Meera is 7 years older than Ishaan. How old is Meera? (a) 16 (b) not enough info (c) 15 (d) 7
18. 18.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
19. 19.🧩 Meera bought 5 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹10 (c) ₹15 (d) not enough info
20. 20.🧩 Arjun bought 4 pens and a cap for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹210 (b) ₹206 (c) ₹52 (d) not enough info
21. 21.🧩 Vihaan is 10 years old. Meera is 9 years older than Vihaan. How old is Meera? (a) 20 (b) 19 (c) not enough info (d) 9
22. 22.🧩 A box has 5 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 30 (c) 25 (d) 10
23. 23.🧩 Nisha is 7 years old. Ananya is 3 years older than Nisha. How old is Ananya? (a) not enough info (b) 10 (c) 11 (d) 3
24. 24.🧩 Aarav is 8 years old. Ishaan is older than Aarav. How old is Ishaan? (a) not enough info (b) 9 (c) 13 (d) 10
25. 25.🧩 Diya bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) ₹25 (c) ₹20 (d) not enough info
26. 26.🧩 Tara bought 6 kites for ₹330 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹55 (c) ₹60 (d) ₹330
27. 27.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
29. 29.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 6 PM (c) 7 PM (d) not enough info
30. 30.🥭 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) no mango is sweet (d) yes, mangoes match
31. 31.🧩 Kabir bought 6 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹60 (c) ₹10 (d) not enough info
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
33. 33.🧩 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
34. 34.🧩 Meera bought 5 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹15 (c) ₹10 (d) not enough info
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
36. 36.🧩 Diya bought 3 notebooks for ₹165 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹165 (c) ₹55 (d) not enough info
37. 37.🧩 Arjun is 7 years old. Kabir is 9 years older than Arjun. How old is Kabir? (a) 16 (b) 9 (c) not enough info (d) 17
38. 38.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
39. 39.🧩 Rohan is 12 years old. Ananya is 3 years older than Rohan. How old is Ananya? (a) 3 (b) not enough info (c) 15 (d) 16
40. 40.🧩 Meera is 11 years old. Aarav is 2 years older than Meera. How old is Aarav? (a) 13 (b) 2 (c) not enough info (d) 14

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