Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 108 · 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.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box has 4 rows of eggs, with 6 in each row. How many eggs are in the box? (a) not enough info (b) 30 (c) 24 (d) 10
3. 3.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
5. 5.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
6. 6.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
7. 7.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
8. 8.📊 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
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
11. 11.🧩 A box has 5 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 40 (b) 48 (c) not enough info (d) 13
12. 12.🧩 Aarav is 12 years old. Arjun is older than Aarav. How old is Arjun? (a) 14 (b) not enough info (c) 17 (d) 13
13. 13.🥭 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) no, check more (d) yes, mangoes match
14. 14.🧩 A box has 8 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 14 (b) not enough info (c) 54 (d) 48
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.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
17. 17.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
18. 18.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 11 (c) 30 (d) 36
19. 19.🧩 Ishaan bought 3 kites and a cap for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹46 (b) ₹140 (c) not enough info (d) ₹137
20. 20.🧩 Saanvi bought 3 kites and a cap for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹55 (b) ₹165 (c) ₹162 (d) not enough info
21. 21.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) 7 PM (d) not enough info
22. 22.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
24. 24.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 2 PM (d) not enough info
25. 25.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
26. 26.🧩 Aarav is 12 years old. Nisha is 4 years older than Aarav. How old is Nisha? (a) 4 (b) 17 (c) not enough info (d) 16
27. 27.🧩 Nisha bought 3 mangoes and a bag for ₹225 in all. Each mango cost the same. What did one mango cost? (a) ₹222 (b) not enough info (c) ₹225 (d) ₹75
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
29. 29.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
30. 30.🧩 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
31. 31.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
32. 32.🧩 Ananya bought 4 kites and a water bottle for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹86 (b) not enough info (c) ₹90 (d) ₹22
33. 33.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
34. 34.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
35. 35.🧩 A box has 5 rows of oranges, with 9 in each row. How many oranges are in the box? (a) not enough info (b) 45 (c) 54 (d) 14
36. 36.🧩 A box has 7 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 72 (b) 63 (c) 16 (d) not enough info
37. 37.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
38. 38.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
39. 39.🧩 Meera bought 2 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹70 (b) not enough info (c) ₹138 (d) ₹140
40. 40.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info

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