Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 266 · 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.🧩 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
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
4. 4.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 14 (b) not enough info (c) 70 (d) 7
5. 5.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
6. 6.🧩 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
7. 7.🧩 Arjun bought 6 notebooks and a water bottle for ₹290 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹290 (c) ₹284 (d) ₹48
8. 8.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
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
11. 11.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
12. 12.🧩 Ananya is 10 years old. Ishaan is 7 years older than Ananya. How old is Ishaan? (a) 7 (b) not enough info (c) 18 (d) 17
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” 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.” gives enough evidence. (a) True (b) False
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Ishaan bought 5 kites for ₹175 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹175 (c) ₹40 (d) ₹35
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
19. 19.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 17 (b) 81 (c) 72 (d) not enough info
20. 20.🧩 Arjun is 11 years old. Kabir is older than Arjun. How old is Kabir? (a) 12 (b) 13 (c) not enough info (d) 16
21. 21.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
22. 22.🧩 Arjun bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹40 (c) ₹105 (d) ₹35
23. 23.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
24. 24.🧩 Vihaan is 7 years old. Arjun is 5 years older than Vihaan. How old is Arjun? (a) 5 (b) 13 (c) 12 (d) not enough info
25. 25.🧩 Arjun bought 5 pens and a cap for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹48 (b) not enough info (c) ₹240 (d) ₹235
26. 26.🧩 Diya bought 2 kites and a bag for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹75 (b) ₹148 (c) not enough info (d) ₹150
27. 27.🧩 Vihaan bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹75 (d) ₹25
28. 28.🧩 Tara bought 4 pens for ₹220 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹55 (c) not enough info (d) ₹220
29. 29.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
31. 31.🧩 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
32. 32.🧩 Meera is 7 years old. Diya is 6 years older than Meera. How old is Diya? (a) 13 (b) not enough info (c) 14 (d) 6
33. 33.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) 16 (b) 7 (c) 12 (d) not enough info
35. 35.🧩 Tara is 7 years old. Rohan is older than Tara. How old is Rohan? (a) not enough info (b) 8 (c) 9 (d) 12
36. 36.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 7 PM
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.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) not enough info (b) 10 (c) 5 (d) 50
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
40. 40.🧩 Ishaan is 7 years old. Rohan is older than Ishaan. How old is Rohan? (a) 8 (b) 9 (c) 12 (d) not enough info

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