Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 546 · 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) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
2. 2.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 6 PM
3. 3.🧩 Rohan is 6 years old. Ishaan is older than Rohan. How old is Ishaan? (a) 7 (b) 11 (c) not enough info (d) 8
4. 4.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
5. 5.🧩 Meera is 9 years old. Kabir is older than Meera. How old is Kabir? (a) 10 (b) not enough info (c) 14 (d) 11
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
7. 7.🧩 A box has 7 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 72 (c) 63 (d) 16
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
9. 9.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 4 PM
10. 10.🧩 Diya bought 2 mangoes and a lunch box for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹90 (c) ₹88 (d) not enough info
11. 11.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
12. 12.🧩 Arjun is 10 years old. Nisha is older than Arjun. How old is Nisha? (a) not enough info (b) 15 (c) 12 (d) 11
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
14. 14.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
15. 15.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
16. 16.🧩 Rohan bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹20
17. 17.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
18. 18.🧩 A box has 7 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 63 (b) 72 (c) not enough info (d) 16
19. 19.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
22. 22.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Ananya is 8 years old. Aarav is 4 years older than Ananya. How old is Aarav? (a) 13 (b) 12 (c) 4 (d) not enough info
24. 24.🧩 A box has 3 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 28 (b) 21 (c) not enough info (d) 10
25. 25.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) 8 PM (d) not enough info
26. 26.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
27. 27.🧩 Diya bought 2 kites and a bag for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹75 (b) ₹150 (c) ₹148 (d) not enough info
28. 28.🧩 Ananya is 9 years old. Diya is older than Ananya. How old is Diya? (a) 11 (b) 10 (c) not enough info (d) 14
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
30. 30.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 2 PM
31. 31.🧩 Meera is 8 years old. Vihaan is older than Meera. How old is Vihaan? (a) 9 (b) 13 (c) not enough info (d) 10
32. 32.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
33. 33.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
34. 34.🧩 A box has 7 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 13 (b) 48 (c) not enough info (d) 42
35. 35.🧩 Aarav is 6 years old. Nisha is 7 years older than Aarav. How old is Nisha? (a) 13 (b) not enough info (c) 14 (d) 7
36. 36.🧩 A box has 7 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 63 (b) not enough info (c) 72 (d) 16
37. 37.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
38. 38.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
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Vihaan is 9 years old. Arjun is 9 years older than Vihaan. How old is Arjun? (a) 9 (b) 18 (c) 19 (d) not enough info

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