Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 450 · 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.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
2. 2.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
3. 3.🧩 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
4. 4.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
6. 6.🧩 Tara bought 6 mangoes and a bag for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹114 (c) ₹20 (d) ₹120
7. 7.🧩 Ananya is 7 years old. Meera is 7 years older than Ananya. How old is Meera? (a) not enough info (b) 7 (c) 14 (d) 15
8. 8.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
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
10. 10.🧩 Ishaan bought 5 kites for ₹125 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹25 (c) not enough info (d) ₹125
11. 11.🧩 A box has 6 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 42 (b) 36 (c) not enough info (d) 12
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
13. 13.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
14. 14.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
15. 15.🧩 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
16. 16.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) no mango is sweet (d) yes, mangoes match
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
18. 18.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
21. 21.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
22. 22.🧩 Saanvi is 12 years old. Tara is 9 years older than Saanvi. How old is Tara? (a) 9 (b) not enough info (c) 21 (d) 22
23. 23.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Tara is 9 years old. Ananya is 2 years older than Tara. How old is Ananya? (a) not enough info (b) 11 (c) 2 (d) 12
26. 26.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
27. 27.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 64 (c) 16 (d) 72
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
29. 29.🧩 Arjun is 11 years old. Saanvi is older than Arjun. How old is Saanvi? (a) not enough info (b) 12 (c) 13 (d) 16
30. 30.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) not enough info (b) 50 (c) 5 (d) 10
31. 31.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
33. 33.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
34. 34.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Kabir bought 3 mangoes and a bag for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) ₹72 (c) not enough info (d) ₹75
36. 36.🧩 Diya bought 4 kites and a lunch box for ₹260 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹256 (d) ₹260
37. 37.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 30 (b) 10 (c) not enough info (d) 25
38. 38.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
39. 39.🧩 Diya bought 3 pens for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) not enough info (c) ₹165 (d) ₹55
40. 40.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence

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