Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 557 · 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.🧩 Saanvi bought 3 balls and a lunch box for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹137 (b) ₹140 (c) ₹46 (d) not enough info
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
5. 5.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
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
7. 7.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
8. 8.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
9. 9.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
10. 10.🧩 Meera is 7 years old. Kabir is 3 years older than Meera. How old is Kabir? (a) 11 (b) 3 (c) not enough info (d) 10
11. 11.🧩 Ananya is 11 years old. Meera is older than Ananya. How old is Meera? (a) 13 (b) 12 (c) 16 (d) not enough info
12. 12.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
13. 13.🧩 Ananya bought 4 balls and a cap for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹176 (b) ₹45 (c) not enough info (d) ₹180
14. 14.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
15. 15.🧩 Diya bought 5 mangoes and a cap for ₹185 in all. Each mango cost the same. What did one mango cost? (a) ₹37 (b) not enough info (c) ₹185 (d) ₹180
16. 16.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 7 PM
17. 17.🧩 A box has 8 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 13 (c) 40 (d) 45
18. 18.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
19. 19.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) not enough info (c) 18 (d) 90
20. 20.🧩 Diya is 8 years old. Ananya is older than Diya. How old is Ananya? (a) 13 (b) 10 (c) not enough info (d) 9
21. 21.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
22. 22.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) not enough info (c) 11 (d) 30
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
24. 24.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 13 (b) not enough info (c) 40 (d) 48
25. 25.🧩 Ananya bought 2 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) not enough info (c) ₹25 (d) ₹20
26. 26.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
27. 27.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 10 PM (c) not enough info (d) 9 PM
28. 28.🧩 Rohan is 6 years old. Meera is 2 years older than Rohan. How old is Meera? (a) not enough info (b) 8 (c) 9 (d) 2
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Ishaan bought 6 notebooks and a bag for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹300 (c) not enough info (d) ₹294
31. 31.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 2 PM
32. 32.🧩 Saanvi bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹20 (c) ₹40 (d) ₹25
33. 33.🧩 Aarav bought 2 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹40 (c) ₹20 (d) ₹25
34. 34.🧩 Ishaan bought 3 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹120
35. 35.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
36. 36.🧩 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
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
38. 38.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
39. 39.🧩 Vihaan bought 2 balls for ₹20 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹10
40. 40.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence

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