Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 447 · 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 3 rows of apples, with 8 in each row. How many apples are in the box? (a) 32 (b) 11 (c) not enough info (d) 24
2. 2.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 6 PM
3. 3.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
4. 4.🧩 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
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
7. 7.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
8. 8.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM
9. 9.🧩 Arjun is 10 years old. Vihaan is 6 years older than Arjun. How old is Vihaan? (a) 16 (b) 17 (c) 6 (d) not enough info
10. 10.🧩 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
11. 11.🧩 Ishaan bought 3 pens for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) not enough info (c) ₹135 (d) ₹45
12. 12.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Kabir is 6 years old. Diya is older than Kabir. How old is Diya? (a) not enough info (b) 8 (c) 11 (d) 7
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Tara is 8 years old. Ananya is 7 years older than Tara. How old is Ananya? (a) 16 (b) 15 (c) 7 (d) not enough info
17. 17.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
18. 18.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
19. 19.🧩 Tara is 12 years old. Diya is older than Tara. How old is Diya? (a) 13 (b) 17 (c) 14 (d) not enough info
20. 20.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Kabir bought 2 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹140 (c) ₹138 (d) ₹70
22. 22.🧩 Meera bought 5 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹100 (c) ₹25 (d) ₹20
23. 23.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
24. 24.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
25. 25.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
26. 26.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
27. 27.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 9 PM (d) 6 PM
28. 28.🧩 Meera is 8 years old. Tara is 7 years older than Meera. How old is Tara? (a) 7 (b) 15 (c) 16 (d) not enough info
29. 29.🧩 Tara bought 4 mangoes and a cap for ₹250 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹250 (c) ₹62 (d) ₹246
30. 30.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
31. 31.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Diya bought 4 balls and a water bottle for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹236 (b) ₹240 (c) not enough info (d) ₹60
33. 33.📊 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
34. 34.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
35. 35.🧩 A box has 6 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 14 (b) not enough info (c) 56 (d) 48
36. 36.🧩 Vihaan bought 3 notebooks and a bag for ₹225 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹225 (c) ₹75 (d) ₹222
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) 30 (c) 11 (d) 35
38. 38.🧩 Nisha is 6 years old. Rohan is older than Nisha. How old is Rohan? (a) 11 (b) 8 (c) 7 (d) not enough info
39. 39.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
40. 40.🧩 Ananya is 10 years old. Kabir is 3 years older than Ananya. How old is Kabir? (a) 3 (b) 13 (c) not enough info (d) 14

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