Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 443 · 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.🧩 Aarav bought 3 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹10
2. 2.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
3. 3.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) not enough info (c) 5 PM (d) 6 PM
4. 4.🧩 A box has 5 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 13 (b) not enough info (c) 40 (d) 48
5. 5.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
7. 7.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
10. 10.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) not enough info (b) 70 (c) 7 (d) 14
11. 11.🧩 Diya is 10 years old. Kabir is older than Diya. How old is Kabir? (a) not enough info (b) 15 (c) 11 (d) 12
12. 12.🧩 Diya is 9 years old. Rohan is 7 years older than Diya. How old is Rohan? (a) not enough info (b) 16 (c) 17 (d) 7
13. 13.🧩 Vihaan is 6 years old. Arjun is 7 years older than Vihaan. How old is Arjun? (a) 7 (b) not enough info (c) 13 (d) 14
14. 14.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) 48 (b) 14 (c) 54 (d) not enough info
15. 15.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
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
19. 19.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
21. 21.🧩 Nisha is 11 years old. Ishaan is 4 years older than Nisha. How old is Ishaan? (a) 16 (b) 4 (c) 15 (d) not enough info
22. 22.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 4 PM (d) 8 PM
23. 23.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
24. 24.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
25. 25.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
26. 26.🧩 A box has 7 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 11 (b) 32 (c) 28 (d) not enough info
27. 27.🧩 Saanvi is 12 years old. Ananya is older than Saanvi. How old is Ananya? (a) 17 (b) not enough info (c) 13 (d) 14
28. 28.🧩 Ananya bought 4 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹60 (c) ₹15 (d) ₹20
29. 29.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 90 (c) 18 (d) not enough info
30. 30.🧩 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
31. 31.🧩 Meera is 12 years old. Ananya is older than Meera. How old is Ananya? (a) 13 (b) 14 (c) 17 (d) not enough info
32. 32.🧩 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
33. 33.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
34. 34.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
35. 35.🥭 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, mangoes match (c) yes, it is certain (d) no, check more
36. 36.🧩 A box has 8 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 16 (b) not enough info (c) 72 (d) 64
37. 37.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
38. 38.🧩 Kabir is 11 years old. Arjun is older than Kabir. How old is Arjun? (a) 13 (b) 16 (c) not enough info (d) 12
39. 39.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
40. 40.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM

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