Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 829 · 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.🧩 Aarav bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) ₹175 (b) ₹35 (c) not enough info (d) ₹40
2. 2.🧩 Aarav is 12 years old. Ishaan is 5 years older than Aarav. How old is Ishaan? (a) 18 (b) 5 (c) 17 (d) not enough info
3. 3.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 10 PM
4. 4.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 15 (b) 20 (c) 8 (d) not enough info
5. 5.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
6. 6.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
7. 7.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
8. 8.🧩 Saanvi bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) not enough info (c) ₹35 (d) ₹120
9. 9.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) not enough info (d) 4 PM
10. 10.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.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
13. 13.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
14. 14.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
16. 16.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Arjun bought 4 markers and a water bottle for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹116 (b) ₹30 (c) ₹120 (d) not enough info
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
19. 19.🧩 A box has 8 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 54 (c) 14 (d) 48
20. 20.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 60 (d) 6
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Kabir bought 5 mangoes and a water bottle for ₹70 in all. Each mango cost the same. What did one mango cost? (a) ₹14 (b) ₹65 (c) not enough info (d) ₹70
23. 23.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
24. 24.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
25. 25.🧩 Rohan is 6 years old. Aarav is 5 years older than Rohan. How old is Aarav? (a) 5 (b) 11 (c) 12 (d) not enough info
26. 26.🧩 A box has 5 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 11 (b) 36 (c) not enough info (d) 30
27. 27.🧩 A box has 7 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 32 (c) 28 (d) 11
28. 28.🧩 Arjun bought 6 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) not enough info (c) ₹25 (d) ₹20
29. 29.🧩 A box has 7 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 56 (c) 14 (d) 49
30. 30.🧩 Aarav bought 5 notebooks and a water bottle for ₹215 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹43 (c) ₹210 (d) ₹215
31. 31.🧩 Kabir is 9 years old. Meera is 2 years older than Kabir. How old is Meera? (a) 11 (b) 2 (c) 12 (d) not enough info
32. 32.🧩 Arjun is 12 years old. Ananya is older than Arjun. How old is Ananya? (a) 17 (b) 14 (c) 13 (d) not enough info
33. 33.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
37. 37.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 9 PM (d) 8 PM
38. 38.🧩 Vihaan is 9 years old. Nisha is 2 years older than Vihaan. How old is Nisha? (a) 2 (b) 11 (c) 12 (d) not enough info
39. 39.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
40. 40.🧩 Diya bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹100 (c) ₹20 (d) not enough info

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