Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 114 · 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.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
2. 2.🧩 Vihaan is 6 years old. Tara is 3 years older than Vihaan. How old is Tara? (a) 3 (b) not enough info (c) 10 (d) 9
3. 3.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
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
7. 7.🧩 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
8. 8.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
9. 9.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
10. 10.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
11. 11.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.📊 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
14. 14.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
15. 15.🧩 Rohan bought 3 markers for ₹165 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹55 (c) ₹165 (d) ₹60
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
17. 17.🧩 Ananya bought 2 notebooks and a water bottle for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) not enough info (c) ₹55 (d) ₹108
18. 18.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
19. 19.🧩 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
20. 20.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) the colour of ink (d) what facts are given
21. 21.🧩 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
22. 22.🧩 Diya bought 2 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹60 (c) ₹35 (d) ₹30
23. 23.🧩 Vihaan is 7 years old. Ananya is 4 years older than Vihaan. How old is Ananya? (a) 4 (b) 11 (c) not enough info (d) 12
24. 24.🧩 Aarav bought 3 notebooks for ₹135 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) not enough info (c) ₹135 (d) ₹45
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
26. 26.🧩 A box has 8 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 81 (b) 17 (c) not enough info (d) 72
27. 27.🧩 Diya is 8 years old. Ananya is older than Diya. How old is Ananya? (a) 13 (b) not enough info (c) 9 (d) 10
28. 28.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 30 (b) not enough info (c) 36 (d) 11
29. 29.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Kabir bought 6 pens and a water bottle for ₹260 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹260 (c) ₹254 (d) ₹43
32. 32.🧩 A box has 3 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 24 (b) 11 (c) 32 (d) not enough info
33. 33.🧩 Ananya bought 6 balls for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹300 (c) not enough info (d) ₹50
34. 34.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
35. 35.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) 7 PM (d) not enough info
36. 36.🧩 Meera is 8 years old. Saanvi is older than Meera. How old is Saanvi? (a) 10 (b) 9 (c) not enough info (d) 13
37. 37.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
38. 38.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box has 3 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 16 (b) 7 (c) 12 (d) not enough info
40. 40.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

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