Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 519 · 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.🧩 Kabir bought 4 mangoes and a bag for ₹270 in all. Each mango cost the same. What did one mango cost? (a) ₹67 (b) ₹266 (c) ₹270 (d) not enough info
2. 2.🧩 Aarav is 9 years old. Tara is 2 years older than Aarav. How old is Tara? (a) 12 (b) not enough info (c) 11 (d) 2
3. 3.🧩 Arjun is 7 years old. Rohan is older than Arjun. How old is Rohan? (a) not enough info (b) 9 (c) 12 (d) 8
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
6. 6.🧩 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
7. 7.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
8. 8.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 10 PM (d) 6 PM
9. 9.🧩 A box has 7 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 14 (c) 49 (d) 56
10. 10.🧩 Ishaan is 11 years old. Ananya is 3 years older than Ishaan. How old is Ananya? (a) 3 (b) 15 (c) 14 (d) not enough info
11. 11.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
12. 12.🧩 Rohan bought 2 kites and a cap for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹78 (b) not enough info (c) ₹80 (d) ₹40
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
14. 14.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
15. 15.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
16. 16.🧩 A box has 8 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 63 (b) not enough info (c) 15 (d) 56
17. 17.🧩 Vihaan is 8 years old. Diya is 8 years older than Vihaan. How old is Diya? (a) 8 (b) not enough info (c) 16 (d) 17
18. 18.🥭 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 mango is sweet (c) yes, it is certain (d) no, check more
19. 19.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
20. 20.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
21. 21.🧩 Saanvi bought 5 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹40 (c) ₹200 (d) not enough info
22. 22.🧩 Rohan is 11 years old. Ishaan is older than Rohan. How old is Ishaan? (a) 13 (b) 12 (c) not enough info (d) 16
23. 23.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
25. 25.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
26. 26.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
27. 27.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
29. 29.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
30. 30.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) not enough info (c) 9 (d) 90
31. 31.🧩 Ishaan bought 5 notebooks for ₹125 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹25 (d) ₹125
32. 32.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
34. 34.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 3 PM (d) 6 PM
35. 35.🧩 Vihaan bought 6 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹60 (c) ₹10 (d) ₹15
36. 36.🧩 Vihaan bought 6 notebooks and a lunch box for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹204 (b) not enough info (c) ₹35 (d) ₹210
37. 37.🧩 Ishaan is 12 years old. Saanvi is 2 years older than Ishaan. How old is Saanvi? (a) 15 (b) not enough info (c) 14 (d) 2
38. 38.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) not enough info (c) 14 (d) 70
39. 39.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
40. 40.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 50 (d) 5

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