Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 867 · 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.🧩 Nisha is 11 years old. Rohan is older than Nisha. How old is Rohan? (a) not enough info (b) 16 (c) 12 (d) 13
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
4. 4.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 3 PM
5. 5.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
6. 6.🧩 Tara bought 3 notebooks and a bag for ₹215 in all. Each notebook cost the same. What did one notebook cost? (a) ₹71 (b) ₹212 (c) ₹215 (d) not enough info
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
10. 10.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
11. 11.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 24 (b) not enough info (c) 20 (d) 9
12. 12.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 20 (b) 24 (c) not enough info (d) 9
13. 13.🧩 Aarav is 12 years old. Kabir is 7 years older than Aarav. How old is Kabir? (a) 7 (b) 19 (c) 20 (d) not enough info
14. 14.🧩 Saanvi is 8 years old. Nisha is 3 years older than Saanvi. How old is Nisha? (a) 12 (b) 3 (c) not enough info (d) 11
15. 15.🧩 Rohan bought 5 markers and a cap for ₹170 in all. Each marker cost the same. What did one marker cost? (a) ₹165 (b) ₹34 (c) ₹170 (d) not enough info
16. 16.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
17. 17.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 6 PM
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
19. 19.🧩 Ishaan bought 3 notebooks and a water bottle for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹150 (b) ₹147 (c) ₹50 (d) not enough info
20. 20.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
21. 21.🧩 Ishaan is 6 years old. Meera is older than Ishaan. How old is Meera? (a) 8 (b) 7 (c) not enough info (d) 11
22. 22.🧩 A box has 4 rows of apples, with 7 in each row. How many apples are in the box? (a) 35 (b) 28 (c) not enough info (d) 11
23. 23.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
24. 24.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
25. 25.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) not enough info (b) 60 (c) 6 (d) 12
26. 26.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
27. 27.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
28. 28.🧩 Diya is 6 years old. Ananya is older than Diya. How old is Ananya? (a) not enough info (b) 11 (c) 8 (d) 7
29. 29.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 5 PM
30. 30.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
31. 31.🧩 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
32. 32.🧩 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
33. 33.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
34. 34.🧩 A box has 8 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 56 (b) not enough info (c) 15 (d) 63
35. 35.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
36. 36.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Kabir bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹250 (b) ₹55 (c) not enough info (d) ₹50
38. 38.🧩 A box has 7 rows of apples, with 8 in each row. How many apples are in the box? (a) 64 (b) 56 (c) not enough info (d) 15
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
40. 40.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence

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