Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 403 · 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.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
2. 2.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 8 (b) 20 (c) not enough info (d) 15
3. 3.🧩 Diya is 6 years old. Saanvi is older than Diya. How old is Saanvi? (a) 11 (b) 7 (c) not enough info (d) 8
4. 4.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
5. 5.🧩 Arjun bought 5 mangoes and a water bottle for ₹220 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹215 (c) ₹44 (d) ₹220
6. 6.🧩 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
7. 7.🧩 Nisha is 12 years old. Aarav is 3 years older than Nisha. How old is Aarav? (a) 15 (b) 3 (c) 16 (d) not enough info
8. 8.🧩 Diya is 8 years old. Kabir is 5 years older than Diya. How old is Kabir? (a) 5 (b) not enough info (c) 14 (d) 13
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 6 PM (c) 10 PM (d) not enough info
12. 12.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
13. 13.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
16. 16.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
21. 21.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
22. 22.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 7 (c) 14 (d) not enough info
23. 23.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
24. 24.🧩 Vihaan is 6 years old. Saanvi is 3 years older than Vihaan. How old is Saanvi? (a) 10 (b) not enough info (c) 3 (d) 9
25. 25.🥭 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) yes, mangoes match (d) no, check more
26. 26.🧩 Aarav is 11 years old. Arjun is 4 years older than Aarav. How old is Arjun? (a) 16 (b) not enough info (c) 4 (d) 15
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.🧩 A box has 5 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) not enough info (b) 36 (c) 11 (d) 30
29. 29.🧩 Arjun is 8 years old. Vihaan is 5 years older than Arjun. How old is Vihaan? (a) 13 (b) not enough info (c) 5 (d) 14
30. 30.🧩 Ishaan bought 6 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹240 (b) ₹45 (c) ₹40 (d) not enough info
31. 31.🧩 A box has 6 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 12 (b) 42 (c) 36 (d) not enough info
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
33. 33.🧩 Ishaan is 9 years old. Ananya is 6 years older than Ishaan. How old is Ananya? (a) 6 (b) 16 (c) 15 (d) not enough info
34. 34.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
35. 35.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 4 PM (c) 8 PM (d) not enough info
36. 36.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
37. 37.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 40 (d) 4
38. 38.🧩 Aarav bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹175 (c) not enough info (d) ₹35
39. 39.🧩 A box has 5 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 14 (b) not enough info (c) 45 (d) 54
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True

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