Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 653 · 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 pens and a cap for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹110 (b) not enough info (c) ₹36 (d) ₹107
2. 2.🧩 A box has 5 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 36 (b) not enough info (c) 11 (d) 30
3. 3.🥭 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) yes, mangoes match (d) no mango is sweet
4. 4.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) not enough info (c) 9 (d) 90
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
6. 6.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
7. 7.🧩 Meera is 11 years old. Arjun is older than Meera. How old is Arjun? (a) 12 (b) 13 (c) not enough info (d) 16
8. 8.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
9. 9.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
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
14. 14.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
16. 16.🧩 Arjun bought 6 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹25 (c) ₹20 (d) ₹120
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Rohan is 7 years old. Ananya is 4 years older than Rohan. How old is Ananya? (a) 12 (b) 4 (c) 11 (d) not enough info
20. 20.🧩 Diya is 9 years old. Kabir is older than Diya. How old is Kabir? (a) not enough info (b) 14 (c) 11 (d) 10
21. 21.🧩 Aarav is 6 years old. Tara is 3 years older than Aarav. How old is Tara? (a) 10 (b) 9 (c) 3 (d) not enough info
22. 22.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
23. 23.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
24. 24.🧩 Tara is 12 years old. Saanvi is 6 years older than Tara. How old is Saanvi? (a) 19 (b) 6 (c) 18 (d) not enough info
25. 25.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
26. 26.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
27. 27.🧩 A box has 5 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 11 (b) 36 (c) 30 (d) not enough info
28. 28.🧩 Ishaan bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) ₹45 (c) ₹40 (d) not enough info
29. 29.🧩 Tara bought 3 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹180 (b) ₹65 (c) ₹60 (d) not enough info
30. 30.🧩 Ananya bought 5 kites and a bag for ₹250 in all. Each kite cost the same. What did one kite cost? (a) ₹250 (b) not enough info (c) ₹50 (d) ₹245
31. 31.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
33. 33.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
34. 34.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
36. 36.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
37. 37.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
38. 38.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
39. 39.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
40. 40.🧩 A box has 6 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 14 (b) not enough info (c) 48 (d) 56

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