Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 347 · 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.🧩 Diya is 10 years old. Nisha is older than Diya. How old is Nisha? (a) 11 (b) 12 (c) not enough info (d) 15
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
6. 6.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) not enough info (b) 12 (c) 60 (d) 6
7. 7.🧩 A box has 7 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 49 (b) not enough info (c) 14 (d) 56
8. 8.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 54 (c) 14 (d) 48
9. 9.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
10. 10.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
11. 11.🧩 Tara bought 2 notebooks and a bag for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹80 (b) ₹158 (c) not enough info (d) ₹160
12. 12.🧩 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
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.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) 3 PM (d) not enough info
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Diya is 12 years old. Aarav is 7 years older than Diya. How old is Aarav? (a) 20 (b) not enough info (c) 7 (d) 19
18. 18.🧩 A box has 8 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 45 (b) not enough info (c) 40 (d) 13
19. 19.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 48 (b) not enough info (c) 13 (d) 42
20. 20.🧩 Ishaan bought 5 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹75
21. 21.🧩 Meera bought 3 pens for ₹45 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹45
22. 22.🧩 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
23. 23.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
24. 24.🧩 A box has 8 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 12 (b) not enough info (c) 36 (d) 32
25. 25.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 42 (b) not enough info (c) 49 (d) 13
26. 26.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
27. 27.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
29. 29.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 5 PM
30. 30.🧩 Nisha is 10 years old. Kabir is older than Nisha. How old is Kabir? (a) 15 (b) not enough info (c) 11 (d) 12
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
32. 32.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 7 (c) 14 (d) not enough info
33. 33.🧩 Tara bought 6 kites and a bag for ₹360 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹354 (c) ₹60 (d) ₹360
34. 34.🧩 Ishaan bought 4 markers and a bag for ₹250 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹250 (c) ₹62 (d) ₹246
35. 35.🧩 A box has 8 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 13 (b) 45 (c) 40 (d) not enough info
36. 36.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
37. 37.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
38. 38.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
39. 39.🧩 Arjun bought 2 pens and a cap for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) ₹75 (c) ₹148 (d) not enough info
40. 40.🧩 Kabir bought 4 pens for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹140 (d) ₹40

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