Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 301 · 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.🧩 Tara bought 6 markers and a water bottle for ₹340 in all. Each marker cost the same. What did one marker cost? (a) ₹56 (b) ₹340 (c) ₹334 (d) not enough info
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
3. 3.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
4. 4.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
5. 5.🧩 Saanvi bought 4 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹65 (c) ₹240 (d) not enough info
6. 6.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
7. 7.🧩 Vihaan bought 3 notebooks and a cap for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) not enough info (c) ₹36 (d) ₹107
8. 8.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) not enough info (b) 18 (c) 9 (d) 90
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
11. 11.🧩 Rohan bought 4 kites and a water bottle for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) ₹35 (c) ₹136 (d) not enough info
12. 12.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
13. 13.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
14. 14.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Ananya is 6 years old. Diya is older than Ananya. How old is Diya? (a) 7 (b) 11 (c) not enough info (d) 8
16. 16.🧩 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
17. 17.🧩 Meera is 9 years old. Kabir is 2 years older than Meera. How old is Kabir? (a) 11 (b) 2 (c) not enough info (d) 12
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Tara is 8 years old. Rohan is older than Tara. How old is Rohan? (a) 9 (b) not enough info (c) 10 (d) 13
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
21. 21.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
22. 22.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) 11 (b) 28 (c) not enough info (d) 32
23. 23.🧩 Kabir is 6 years old. Diya is older than Kabir. How old is Diya? (a) 7 (b) 11 (c) not enough info (d) 8
24. 24.🧩 Kabir is 10 years old. Ishaan is 6 years older than Kabir. How old is Ishaan? (a) 6 (b) 17 (c) not enough info (d) 16
25. 25.🧩 Ananya bought 4 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹180 (b) ₹45 (c) ₹50 (d) not enough info
26. 26.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 6 PM
27. 27.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
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
29. 29.🧩 Rohan is 7 years old. Diya is older than Rohan. How old is Diya? (a) 8 (b) 12 (c) not enough info (d) 9
30. 30.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 16 (d) 8
31. 31.🧩 Diya bought 5 markers for ₹275 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹60 (c) not enough info (d) ₹275
32. 32.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 9 PM
33. 33.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) 2 PM (d) not enough info
34. 34.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
35. 35.🧩 Ananya bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹120
36. 36.🧩 A box has 6 rows of apples, with 9 in each row. How many apples are in the box? (a) 54 (b) not enough info (c) 63 (d) 15
37. 37.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 11 (c) 30 (d) 35
38. 38.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
39. 39.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
40. 40.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence

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