Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 583 · 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.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
2. 2.🧩 Nisha bought 2 mangoes and a lunch box for ₹110 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹110 (c) ₹108 (d) ₹55
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
4. 4.🧩 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
5. 5.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Kabir is 9 years old. Diya is older than Kabir. How old is Diya? (a) 14 (b) 10 (c) 11 (d) not enough info
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
10. 10.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) 6 PM (d) not enough info
11. 11.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Nisha is 8 years old. Aarav is 5 years older than Nisha. How old is Aarav? (a) not enough info (b) 14 (c) 13 (d) 5
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
16. 16.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
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) True (b) False
19. 19.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
20. 20.🧩 Kabir is 6 years old. Meera is older than Kabir. How old is Meera? (a) 7 (b) not enough info (c) 8 (d) 11
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
22. 22.🥭 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 mango is sweet (c) yes, mangoes match (d) no, check more
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
24. 24.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
25. 25.🧩 A box has 6 rows of apples, with 5 in each row. How many apples are in the box? (a) 30 (b) 11 (c) not enough info (d) 35
26. 26.🧩 Tara bought 6 kites for ₹330 in all. Each kite cost the same. What did one kite cost? (a) ₹330 (b) ₹60 (c) ₹55 (d) not enough info
27. 27.🧩 Nisha bought 2 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹30 (c) not enough info (d) ₹25
28. 28.🧩 Nisha bought 2 kites and a cap for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹38 (c) ₹20 (d) not enough info
29. 29.🧩 Meera is 7 years old. Ananya is older than Meera. How old is Ananya? (a) 9 (b) not enough info (c) 12 (d) 8
30. 30.🧩 Rohan bought 6 markers and a water bottle for ₹400 in all. Each marker cost the same. What did one marker cost? (a) ₹394 (b) not enough info (c) ₹66 (d) ₹400
31. 31.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
32. 32.🧩 A box has 3 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 18 (b) not enough info (c) 24 (d) 9
33. 33.🧩 Saanvi is 7 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 12 (b) not enough info (c) 8 (d) 9
34. 34.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
35. 35.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Aarav bought 2 notebooks and a water bottle for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) not enough info (c) ₹118 (d) ₹60
37. 37.🧩 Nisha bought 2 kites for ₹20 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹10 (c) ₹15 (d) ₹20
38. 38.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 36 (b) 12 (c) not enough info (d) 27
39. 39.🧩 Rohan is 12 years old. Diya is older than Rohan. How old is Diya? (a) 14 (b) 17 (c) not enough info (d) 13
40. 40.🧩 Vihaan is 7 years old. Nisha is 2 years older than Vihaan. How old is Nisha? (a) not enough info (b) 10 (c) 9 (d) 2

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