Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 223 · 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.🧩 Meera is 8 years old. Arjun is older than Meera. How old is Arjun? (a) not enough info (b) 13 (c) 9 (d) 10
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
3. 3.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
5. 5.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) yes, it is certain (d) no mango is sweet
6. 6.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) not enough info (b) 90 (c) 18 (d) 9
7. 7.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
8. 8.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
13. 13.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
14. 14.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
15. 15.🧩 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
16. 16.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 8 PM (c) not enough info (d) 7 PM
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Arjun bought 2 kites for ₹20 in all. Each kite cost the same. What did one kite cost? (a) ₹10 (b) ₹20 (c) not enough info (d) ₹15
19. 19.🧩 Saanvi bought 4 balls for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) not enough info (c) ₹160 (d) ₹45
20. 20.🧩 Kabir is 6 years old. Rohan is 3 years older than Kabir. How old is Rohan? (a) 10 (b) 3 (c) 9 (d) not enough info
21. 21.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
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
23. 23.🧩 Meera is 9 years old. Aarav is 3 years older than Meera. How old is Aarav? (a) not enough info (b) 13 (c) 3 (d) 12
24. 24.🧩 Rohan bought 2 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹50 (c) ₹25 (d) not enough info
25. 25.🧩 Arjun bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) not enough info (c) ₹40 (d) ₹20
26. 26.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
27. 27.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
28. 28.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 28 (b) 10 (c) not enough info (d) 24
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
30. 30.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
31. 31.🧩 Saanvi is 11 years old. Ananya is 8 years older than Saanvi. How old is Ananya? (a) 20 (b) not enough info (c) 8 (d) 19
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 has 4 rows of apples, with 9 in each row. How many apples are in the box? (a) not enough info (b) 36 (c) 13 (d) 45
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
36. 36.🧩 Aarav is 10 years old. Meera is 2 years older than Aarav. How old is Meera? (a) 12 (b) 13 (c) 2 (d) not enough info
37. 37.🧩 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
38. 38.🧩 A box has 7 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 56 (b) 64 (c) not enough info (d) 15
39. 39.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
40. 40.🧩 Arjun is 9 years old. Diya is 4 years older than Arjun. How old is Diya? (a) 14 (b) 4 (c) not enough info (d) 13

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