Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 608 · 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.🧩 Vihaan bought 3 mangoes and a bag for ₹270 in all. Each mango cost the same. What did one mango cost? (a) ₹267 (b) ₹270 (c) ₹90 (d) not enough info
2. 2.🧩 Tara bought 6 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹150 (c) ₹25 (d) not enough info
3. 3.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
4. 4.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
5. 5.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
6. 6.🧩 Nisha is 7 years old. Diya is older than Nisha. How old is Diya? (a) 9 (b) not enough info (c) 12 (d) 8
7. 7.🧩 A box has 6 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 14 (c) 48 (d) 56
8. 8.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) 8 (c) not enough info (d) 16
9. 9.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
10. 10.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
11. 11.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
13. 13.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
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Ananya bought 4 markers and a water bottle for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹75 (b) ₹300 (c) not enough info (d) ₹296
18. 18.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
19. 19.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
20. 20.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Diya bought 4 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹15 (c) ₹60 (d) not enough info
24. 24.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
25. 25.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
26. 26.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 16 (d) 20
27. 27.🧩 Kabir is 8 years old. Aarav is older than Kabir. How old is Aarav? (a) 13 (b) 10 (c) 9 (d) not enough info
28. 28.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
29. 29.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
30. 30.🧩 Nisha bought 2 pens and a bag for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹75 (b) not enough info (c) ₹150 (d) ₹148
31. 31.🧩 Arjun bought 5 markers for ₹175 in all. Each marker cost the same. What did one marker cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹175
32. 32.🧩 Aarav bought 4 kites and a cap for ₹280 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹280 (c) ₹70 (d) ₹276
33. 33.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
34. 34.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
35. 35.🧩 Diya bought 6 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹25 (c) ₹30 (d) ₹150
36. 36.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
37. 37.🧩 Tara bought 5 markers and a cap for ₹115 in all. Each marker cost the same. What did one marker cost? (a) ₹23 (b) ₹110 (c) not enough info (d) ₹115
38. 38.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 2 PM (d) not enough info
39. 39.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
40. 40.🧩 Diya is 10 years old. Ishaan is older than Diya. How old is Ishaan? (a) 15 (b) 11 (c) 12 (d) not enough info

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