Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 376 · 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 6 balls and a bag for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹300 (b) ₹294 (c) ₹50 (d) not enough info
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
6. 6.📊 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
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
8. 8.🧩 Nisha bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹90 (b) not enough info (c) ₹15 (d) ₹20
9. 9.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
10. 10.🧩 Ananya is 11 years old. Aarav is older than Ananya. How old is Aarav? (a) 12 (b) 16 (c) 13 (d) not enough info
11. 11.🧩 Aarav is 9 years old. Arjun is older than Aarav. How old is Arjun? (a) 14 (b) 10 (c) 11 (d) not enough info
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
13. 13.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
14. 14.🧩 A box has 5 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 25 (c) 30 (d) 10
15. 15.🧩 Nisha is 10 years old. Aarav is 7 years older than Nisha. How old is Aarav? (a) 17 (b) 18 (c) 7 (d) not enough info
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Aarav bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) ₹275 (b) ₹55 (c) ₹60 (d) not enough info
18. 18.🧩 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
19. 19.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 9 PM
20. 20.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 5 (c) 10 (d) 50
21. 21.🧩 A box has 3 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 21 (b) not enough info (c) 28 (d) 10
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Ananya is 10 years old. Meera is 3 years older than Ananya. How old is Meera? (a) 14 (b) 3 (c) 13 (d) not enough info
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
26. 26.🧩 Nisha is 8 years old. Tara is 3 years older than Nisha. How old is Tara? (a) 3 (b) 12 (c) not enough info (d) 11
27. 27.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
28. 28.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
29. 29.🧩 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
30. 30.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
31. 31.🥭 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) no, check more (d) yes, mangoes match
32. 32.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
33. 33.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
35. 35.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 12 (c) not enough info (d) 60
36. 36.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) not enough info (b) 6 (c) 12 (d) 60
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
38. 38.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
39. 39.🧩 Vihaan is 6 years old. Rohan is older than Vihaan. How old is Rohan? (a) 11 (b) 7 (c) not enough info (d) 8
40. 40.🧩 Ananya is 8 years old. Meera is older than Ananya. How old is Meera? (a) 9 (b) 10 (c) not enough info (d) 13

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