Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 98 · 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.🧩 Ishaan is 6 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 7 (b) 8 (c) not enough info (d) 11
2. 2.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
3. 3.🧩 Ananya bought 5 markers for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) not enough info (c) ₹65 (d) ₹300
4. 4.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
5. 5.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
6. 6.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 12 (d) 7
8. 8.🧩 Kabir is 9 years old. Diya is older than Kabir. How old is Diya? (a) not enough info (b) 11 (c) 14 (d) 10
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
10. 10.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Saanvi bought 2 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹50 (c) ₹25 (d) not enough info
13. 13.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
17. 17.🧩 Meera bought 3 markers and a bag for ₹85 in all. Each marker cost the same. What did one marker cost? (a) ₹28 (b) not enough info (c) ₹82 (d) ₹85
18. 18.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Diya is 6 years old. Ishaan is 3 years older than Diya. How old is Ishaan? (a) 3 (b) not enough info (c) 10 (d) 9
21. 21.🧩 Diya bought 3 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹180 (b) not enough info (c) ₹60 (d) ₹65
22. 22.🧩 Saanvi is 12 years old. Vihaan is 2 years older than Saanvi. How old is Vihaan? (a) not enough info (b) 2 (c) 14 (d) 15
23. 23.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Vihaan bought 6 balls and a bag for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹140 (b) ₹134 (c) not enough info (d) ₹23
26. 26.🧩 Arjun bought 6 kites and a lunch box for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹104 (b) not enough info (c) ₹110 (d) ₹18
27. 27.🧩 Kabir is 6 years old. Nisha is older than Kabir. How old is Nisha? (a) 8 (b) not enough info (c) 11 (d) 7
28. 28.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) not enough info (b) 9 (c) 90 (d) 18
29. 29.🧩 Kabir is 12 years old. Nisha is older than Kabir. How old is Nisha? (a) 14 (b) 17 (c) 13 (d) not enough info
30. 30.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
31. 31.🧩 Ishaan bought 3 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹90 (c) ₹30 (d) not enough info
32. 32.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 24 (b) 10 (c) 28 (d) not enough info
33. 33.🧩 Arjun is 12 years old. Aarav is older than Arjun. How old is Aarav? (a) not enough info (b) 17 (c) 13 (d) 14
34. 34.🧩 Kabir bought 3 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹90 (b) ₹35 (c) ₹30 (d) not enough info
35. 35.🧩 Arjun is 6 years old. Diya is 6 years older than Arjun. How old is Diya? (a) 6 (b) 13 (c) not enough info (d) 12
36. 36.🧩 Ananya is 6 years old. Meera is 5 years older than Ananya. How old is Meera? (a) 5 (b) 12 (c) not enough info (d) 11
37. 37.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
38. 38.🧩 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
39. 39.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
40. 40.🧩 Meera bought 2 notebooks and a lunch box for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹65 (c) ₹128 (d) ₹130

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