Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 824 · 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.🧩 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
2. 2.🧩 A box has 3 rows of apples, with 6 in each row. How many apples are in the box? (a) 24 (b) not enough info (c) 18 (d) 9
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
6. 6.🧩 Meera bought 6 pens and a lunch box for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹13 (b) ₹80 (c) ₹74 (d) not enough info
7. 7.🥭 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) no, check more (c) yes, it is certain (d) yes, mangoes match
8. 8.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.🧩 A box has 6 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 56 (c) 14 (d) 48
11. 11.🧩 Diya is 6 years old. Vihaan is 6 years older than Diya. How old is Vihaan? (a) 13 (b) 6 (c) 12 (d) not enough info
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
13. 13.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 4 PM
14. 14.🧩 Vihaan bought 4 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹240 (c) ₹60 (d) ₹65
15. 15.🧩 Diya bought 3 balls and a cap for ₹170 in all. Each ball cost the same. What did one ball cost? (a) ₹167 (b) not enough info (c) ₹170 (d) ₹56
16. 16.🧩 Diya bought 4 kites and a water bottle for ₹130 in all. Each kite cost the same. What did one kite cost? (a) ₹130 (b) ₹32 (c) not enough info (d) ₹126
17. 17.🧩 Arjun bought 2 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹20 (c) not enough info (d) ₹15
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
20. 20.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
21. 21.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
22. 22.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Diya bought 2 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹20
24. 24.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
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
26. 26.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 6 PM
27. 27.🧩 Aarav bought 5 pens for ₹275 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹55 (d) ₹275
28. 28.🧩 Diya is 8 years old. Ishaan is older than Diya. How old is Ishaan? (a) 10 (b) 9 (c) not enough info (d) 13
29. 29.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
30. 30.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
31. 31.🧩 Rohan bought 6 notebooks and a water bottle for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹26 (b) not enough info (c) ₹160 (d) ₹154
32. 32.🧩 Diya is 7 years old. Nisha is older than Diya. How old is Nisha? (a) not enough info (b) 9 (c) 12 (d) 8
33. 33.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
34. 34.🧩 Ananya is 10 years old. Ishaan is 6 years older than Ananya. How old is Ishaan? (a) 17 (b) 6 (c) not enough info (d) 16
35. 35.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
36. 36.🧩 Aarav is 6 years old. Diya is 3 years older than Aarav. How old is Diya? (a) not enough info (b) 3 (c) 9 (d) 10
37. 37.🧩 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
38. 38.🧩 Ishaan bought 5 pens and a water bottle for ₹270 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹265 (c) ₹270 (d) ₹54
39. 39.🧩 Ananya bought 6 markers for ₹360 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹360 (c) ₹65 (d) ₹60
40. 40.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 8 (b) 15 (c) not enough info (d) 20

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