Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 946 · 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.🧩 Rohan is 8 years old. Aarav is 2 years older than Rohan. How old is Aarav? (a) 2 (b) 10 (c) not enough info (d) 11
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
3. 3.🧩 A box has 7 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 40 (b) not enough info (c) 12 (d) 35
4. 4.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
6. 6.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
9. 9.🧩 Diya bought 6 pens for ₹360 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹65 (d) ₹360
10. 10.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
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.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
16. 16.🧩 A box has 5 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 11 (b) 30 (c) 36 (d) not enough info
17. 17.🧩 A box has 6 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 12 (b) 42 (c) 36 (d) not enough info
18. 18.🧩 Saanvi bought 6 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹35 (c) ₹180 (d) not enough info
19. 19.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
20. 20.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 36 (b) 11 (c) not enough info (d) 30
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
22. 22.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
24. 24.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
25. 25.🧩 Saanvi is 12 years old. Kabir is older than Saanvi. How old is Kabir? (a) 17 (b) 13 (c) not enough info (d) 14
26. 26.🧩 Ishaan is 6 years old. Saanvi is older than Ishaan. How old is Saanvi? (a) 8 (b) 11 (c) not enough info (d) 7
27. 27.🧩 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
28. 28.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) 8 (c) not enough info (d) 16
29. 29.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
30. 30.🧩 Tara bought 5 balls and a water bottle for ₹330 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹66 (c) ₹325 (d) ₹330
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
32. 32.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
33. 33.🧩 Rohan is 11 years old. Aarav is older than Rohan. How old is Aarav? (a) 13 (b) 16 (c) 12 (d) not enough info
34. 34.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
36. 36.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
37. 37.🧩 Ananya bought 6 balls and a bag for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹94 (b) ₹100 (c) not enough info (d) ₹16
38. 38.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
39. 39.🧩 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
40. 40.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM

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