Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 914 · 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) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
2. 2.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
3. 3.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
5. 5.🧩 Ananya bought 4 pens and a lunch box for ₹260 in all. Each pen cost the same. What did one pen cost? (a) ₹260 (b) not enough info (c) ₹256 (d) ₹65
6. 6.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
7. 7.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 3 PM
8. 8.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
11. 11.🧩 Ananya is 9 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 11 (b) not enough info (c) 14 (d) 10
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
13. 13.🧩 A box has 6 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 13 (b) not enough info (c) 42 (d) 49
14. 14.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
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.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
17. 17.🧩 A box has 5 rows of apples, with 7 in each row. How many apples are in the box? (a) 42 (b) not enough info (c) 35 (d) 12
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
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.🧩 Ishaan bought 3 balls and a water bottle for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) not enough info (c) ₹90 (d) ₹87
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
24. 24.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
25. 25.🧩 Aarav is 12 years old. Meera is 3 years older than Aarav. How old is Meera? (a) 16 (b) not enough info (c) 3 (d) 15
26. 26.🧩 A box has 3 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 12 (b) 36 (c) 27 (d) not enough info
27. 27.🧩 Ananya is 9 years old. Tara is 9 years older than Ananya. How old is Tara? (a) 19 (b) 18 (c) 9 (d) not enough info
28. 28.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
29. 29.🧩 Saanvi bought 5 pens and a cap for ₹155 in all. Each pen cost the same. What did one pen cost? (a) ₹155 (b) not enough info (c) ₹31 (d) ₹150
30. 30.🧩 Meera bought 2 mangoes and a bag for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹120 (c) ₹118 (d) not enough info
31. 31.🧩 Ananya bought 5 kites and a water bottle for ₹135 in all. Each kite cost the same. What did one kite cost? (a) ₹27 (b) ₹130 (c) not enough info (d) ₹135
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
33. 33.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
34. 34.🧩 Ananya bought 3 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹30 (c) ₹75 (d) not enough info
35. 35.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
36. 36.🧩 Arjun is 12 years old. Diya is 9 years older than Arjun. How old is Diya? (a) 21 (b) 9 (c) not enough info (d) 22
37. 37.🧩 A box has 6 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 63 (b) 54 (c) 15 (d) not enough info
38. 38.🧩 Nisha bought 4 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) ₹10 (b) not enough info (c) ₹40 (d) ₹15
39. 39.🧩 Nisha bought 6 notebooks and a cap for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹174 (d) ₹180
40. 40.🧩 Diya bought 3 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹75 (c) not enough info (d) ₹30

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