Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 158 · 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.🧩 A box has 6 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 14 (b) 56 (c) 48 (d) not enough info
2. 2.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
3. 3.🧩 A box has 7 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 11 (b) 32 (c) not enough info (d) 28
4. 4.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
5. 5.🧩 Vihaan bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) ₹25 (c) not enough info (d) ₹20
6. 6.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
7. 7.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
8. 8.🧩 Vihaan is 10 years old. Diya is 3 years older than Vihaan. How old is Diya? (a) not enough info (b) 3 (c) 13 (d) 14
9. 9.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
10. 10.🥭 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) no, check more (d) yes, it is certain
11. 11.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
12. 12.🧩 A box has 4 rows of apples, with 9 in each row. How many apples are in the box? (a) 36 (b) 45 (c) 13 (d) not enough info
13. 13.🧩 Ishaan bought 4 balls and a water bottle for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹116 (c) ₹30 (d) not enough info
14. 14.🧩 Diya bought 5 balls and a lunch box for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹175 (b) ₹36 (c) ₹180 (d) not enough info
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
16. 16.🧩 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
17. 17.🧩 Kabir is 6 years old. Diya is 7 years older than Kabir. How old is Diya? (a) 14 (b) not enough info (c) 7 (d) 13
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.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
20. 20.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
22. 22.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
23. 23.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
24. 24.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) not enough info (d) 7 PM
25. 25.🧩 Tara bought 2 pens and a bag for ₹160 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹160 (c) ₹158 (d) ₹80
26. 26.🧩 Kabir bought 3 markers and a water bottle for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹130 (b) ₹127 (c) not enough info (d) ₹43
27. 27.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
28. 28.🧩 Meera is 10 years old. Nisha is 3 years older than Meera. How old is Nisha? (a) 14 (b) not enough info (c) 3 (d) 13
29. 29.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
30. 30.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
31. 31.🧩 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
32. 32.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 32 (b) not enough info (c) 36 (d) 12
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Ishaan is 11 years old. Aarav is older than Ishaan. How old is Aarav? (a) 13 (b) 12 (c) 16 (d) not enough info
35. 35.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
36. 36.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
37. 37.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 6 PM
38. 38.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Arjun bought 2 mangoes and a cap for ₹80 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹80 (d) ₹78
40. 40.🧩 Vihaan is 11 years old. Ishaan is older than Vihaan. How old is Ishaan? (a) 13 (b) 16 (c) 12 (d) not enough info

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