Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 152 · 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.📊 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
2. 2.🧩 Kabir bought 5 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹200 (b) ₹40 (c) not enough info (d) ₹45
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
4. 4.🧩 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
5. 5.🧩 Saanvi bought 6 kites for ₹210 in all. Each kite cost the same. What did one kite cost? (a) ₹210 (b) ₹35 (c) ₹40 (d) not enough info
6. 6.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
8. 8.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
9. 9.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) no, check more (d) yes, mangoes match
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
13. 13.🧩 A box has 4 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 30 (b) not enough info (c) 24 (d) 10
14. 14.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Tara bought 4 pens and a water bottle for ₹270 in all. Each pen cost the same. What did one pen cost? (a) ₹67 (b) ₹270 (c) ₹266 (d) not enough info
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
20. 20.🧩 Rohan is 6 years old. Vihaan is 2 years older than Rohan. How old is Vihaan? (a) 2 (b) 8 (c) 9 (d) not enough info
21. 21.🧩 Nisha is 9 years old. Kabir is 4 years older than Nisha. How old is Kabir? (a) not enough info (b) 4 (c) 13 (d) 14
22. 22.🧩 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
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
25. 25.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
26. 26.🧩 Nisha bought 4 balls for ₹220 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹60 (c) ₹55 (d) ₹220
27. 27.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
28. 28.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 90 (b) 9 (c) 18 (d) not enough info
29. 29.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 20 (b) 9 (c) 24 (d) not enough info
30. 30.🧩 Ananya bought 4 kites and a water bottle for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹236 (b) ₹60 (c) not enough info (d) ₹240
31. 31.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
33. 33.🧩 Ananya is 11 years old. Vihaan is 3 years older than Ananya. How old is Vihaan? (a) 15 (b) 3 (c) not enough info (d) 14
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
35. 35.🧩 Diya is 7 years old. Rohan is older than Diya. How old is Rohan? (a) 12 (b) not enough info (c) 9 (d) 8
36. 36.🧩 Aarav bought 4 kites for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹160 (b) ₹45 (c) ₹40 (d) not enough info
37. 37.🧩 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
38. 38.🧩 Rohan is 12 years old. Saanvi is older than Rohan. How old is Saanvi? (a) 14 (b) 13 (c) 17 (d) not enough info
39. 39.🧩 A box has 4 rows of apples, with 8 in each row. How many apples are in the box? (a) 12 (b) 32 (c) not enough info (d) 40
40. 40.🧩 Tara bought 6 balls for ₹360 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹65 (c) ₹360 (d) not enough info

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