Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 984 · 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.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
3. 3.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
4. 4.🧩 Nisha bought 3 pens and a bag for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹135 (c) not enough info (d) ₹132
5. 5.🥭 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, it is certain (c) yes, mangoes match (d) no, check more
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
7. 7.🧩 Aarav is 12 years old. Kabir is older than Aarav. How old is Kabir? (a) 14 (b) 13 (c) 17 (d) not enough info
8. 8.🧩 Kabir bought 4 markers and a lunch box for ₹210 in all. Each marker cost the same. What did one marker cost? (a) ₹52 (b) ₹210 (c) not enough info (d) ₹206
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
10. 10.🧩 Ananya is 7 years old. Aarav is older than Ananya. How old is Aarav? (a) 12 (b) 8 (c) 9 (d) not enough info
11. 11.🧩 Rohan bought 2 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹30 (c) not enough info (d) ₹60
12. 12.🧩 Nisha bought 4 pens and a lunch box for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹52 (b) not enough info (c) ₹210 (d) ₹206
13. 13.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
14. 14.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
16. 16.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
17. 17.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
18. 18.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
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Arjun bought 3 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹25 (c) not enough info (d) ₹20
22. 22.🧩 Diya is 6 years old. Ananya is 4 years older than Diya. How old is Ananya? (a) 4 (b) not enough info (c) 11 (d) 10
23. 23.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Aarav bought 2 kites and a bag for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹118 (b) not enough info (c) ₹120 (d) ₹60
27. 27.🧩 Kabir is 6 years old. Arjun is older than Kabir. How old is Arjun? (a) 11 (b) not enough info (c) 8 (d) 7
28. 28.🧩 Aarav bought 6 markers for ₹210 in all. Each marker cost the same. What did one marker cost? (a) ₹210 (b) not enough info (c) ₹40 (d) ₹35
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
30. 30.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
31. 31.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM
32. 32.🧩 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
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
34. 34.🧩 Arjun is 6 years old. Nisha is 5 years older than Arjun. How old is Nisha? (a) 5 (b) 12 (c) not enough info (d) 11
35. 35.🧩 Vihaan bought 3 notebooks and a bag for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹140 (b) ₹137 (c) not enough info (d) ₹46
36. 36.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
37. 37.🧩 A box has 3 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 9 (c) 24 (d) 18
38. 38.🧩 A box has 5 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 40 (b) 48 (c) 13 (d) not enough info
39. 39.🧩 Aarav bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹75
40. 40.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True

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