Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 692 · 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.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) yes, it is certain (d) no mango is sweet
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
3. 3.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 7 PM
4. 4.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
5. 5.🧩 Aarav bought 4 pens and a cap for ₹170 in all. Each pen cost the same. What did one pen cost? (a) ₹166 (b) ₹170 (c) ₹42 (d) not enough info
6. 6.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
7. 7.🧩 Saanvi is 6 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 11 (b) not enough info (c) 7 (d) 8
8. 8.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Ishaan bought 6 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹240 (c) ₹45 (d) ₹40
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Ishaan is 6 years old. Diya is 5 years older than Ishaan. How old is Diya? (a) 11 (b) 5 (c) 12 (d) not enough info
12. 12.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
13. 13.🧩 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
14. 14.🧩 Vihaan is 6 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) 8 (b) not enough info (c) 7 (d) 11
15. 15.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 4 PM
16. 16.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
17. 17.🧩 Diya is 7 years old. Meera is 8 years older than Diya. How old is Meera? (a) 16 (b) not enough info (c) 15 (d) 8
18. 18.🧩 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
19. 19.🧩 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
20. 20.🧩 Diya bought 5 notebooks and a bag for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹14 (b) ₹65 (c) ₹70 (d) not enough info
21. 21.📊 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
22. 22.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
24. 24.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
25. 25.🧩 Diya bought 5 markers and a bag for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹220 (b) not enough info (c) ₹215 (d) ₹44
26. 26.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
27. 27.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
29. 29.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
30. 30.🧩 Ishaan bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹25 (c) ₹100 (d) ₹20
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.🧩 Kabir bought 6 balls and a water bottle for ₹280 in all. Each ball cost the same. What did one ball cost? (a) ₹274 (b) not enough info (c) ₹46 (d) ₹280
33. 33.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) not enough info (c) 8 (d) 4
34. 34.🧩 A box has 7 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 15 (c) 56 (d) 64
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
36. 36.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
37. 37.🧩 Saanvi is 11 years old. Rohan is 9 years older than Saanvi. How old is Rohan? (a) not enough info (b) 9 (c) 21 (d) 20
38. 38.🧩 Saanvi bought 4 mangoes and a bag for ₹190 in all. Each mango cost the same. What did one mango cost? (a) ₹47 (b) not enough info (c) ₹190 (d) ₹186
39. 39.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
40. 40.🧩 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

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