Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 980 · 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 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 2 PM (d) 6 PM
2. 2.🧩 Meera is 9 years old. Nisha is 8 years older than Meera. How old is Nisha? (a) 8 (b) 18 (c) 17 (d) not enough info
3. 3.🧩 Arjun bought 6 balls and a water bottle for ₹290 in all. Each ball cost the same. What did one ball cost? (a) ₹284 (b) ₹290 (c) not enough info (d) ₹48
4. 4.🧩 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
5. 5.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
7. 7.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 9 PM (d) 7 PM
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
9. 9.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
10. 10.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
11. 11.🧩 A box has 5 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 48 (b) 13 (c) 40 (d) not enough info
12. 12.🧩 Aarav bought 6 kites for ₹270 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹45 (c) ₹50 (d) ₹270
13. 13.🧩 Saanvi bought 4 notebooks and a cap for ₹290 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹72 (c) ₹290 (d) ₹286
14. 14.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
15. 15.🧩 Rohan is 7 years old. Tara is older than Rohan. How old is Tara? (a) not enough info (b) 12 (c) 9 (d) 8
16. 16.🥭 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
17. 17.🧩 Kabir bought 2 balls and a cap for ₹70 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹70 (d) ₹68
18. 18.🧩 Vihaan bought 3 kites and a bag for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹220 (b) ₹73 (c) not enough info (d) ₹217
19. 19.🧩 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
20. 20.🧩 A box has 7 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 40 (b) 12 (c) 35 (d) not enough info
21. 21.🧩 Kabir is 7 years old. Rohan is older than Kabir. How old is Rohan? (a) 12 (b) not enough info (c) 9 (d) 8
22. 22.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
23. 23.🧩 Diya is 12 years old. Aarav is older than Diya. How old is Aarav? (a) not enough info (b) 13 (c) 17 (d) 14
24. 24.🧩 Ananya is 11 years old. Saanvi is 8 years older than Ananya. How old is Saanvi? (a) 20 (b) 8 (c) not enough info (d) 19
25. 25.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
26. 26.🧩 Rohan bought 5 markers and a cap for ₹185 in all. Each marker cost the same. What did one marker cost? (a) ₹185 (b) not enough info (c) ₹180 (d) ₹37
27. 27.🧩 Aarav bought 3 kites and a bag for ₹115 in all. Each kite cost the same. What did one kite cost? (a) ₹38 (b) ₹115 (c) ₹112 (d) not enough info
28. 28.🧩 Saanvi is 6 years old. Nisha is 3 years older than Saanvi. How old is Nisha? (a) not enough info (b) 3 (c) 9 (d) 10
29. 29.🧩 Aarav bought 5 kites for ₹275 in all. Each kite cost the same. What did one kite cost? (a) ₹55 (b) not enough info (c) ₹60 (d) ₹275
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
31. 31.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 12 (b) 6 (c) not enough info (d) 60
32. 32.🧩 Ishaan bought 3 mangoes and a bag for ₹115 in all. Each mango cost the same. What did one mango cost? (a) ₹38 (b) ₹115 (c) not enough info (d) ₹112
33. 33.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
34. 34.🧩 Meera bought 5 pens for ₹225 in all. Each pen cost the same. What did one pen cost? (a) ₹225 (b) ₹50 (c) not enough info (d) ₹45
35. 35.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
36. 36.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) 11 (c) 30 (d) not enough info
37. 37.🧩 A box has 4 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 9 (b) 25 (c) not enough info (d) 20
38. 38.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
39. 39.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
40. 40.🧩 Saanvi bought 6 mangoes and a bag for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹154 (b) ₹26 (c) ₹160 (d) not enough info

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