Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 507 · 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.🧩 Ishaan bought 6 kites and a water bottle for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) ₹90 (c) not enough info (d) ₹84
2. 2.🧩 Ishaan bought 3 kites and a lunch box for ₹135 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) not enough info (c) ₹132 (d) ₹135
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
4. 4.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 9 (c) 20 (d) 24
5. 5.🧩 Vihaan bought 3 pens and a water bottle for ₹130 in all. Each pen cost the same. What did one pen cost? (a) ₹127 (b) ₹130 (c) ₹43 (d) not enough info
6. 6.🧩 Meera is 6 years old. Nisha is 8 years older than Meera. How old is Nisha? (a) 15 (b) 8 (c) not enough info (d) 14
7. 7.🧩 Arjun bought 2 pens and a bag for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹108 (b) ₹55 (c) not enough info (d) ₹110
8. 8.🧩 Tara bought 4 markers and a water bottle for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹76 (b) ₹80 (c) ₹20 (d) not enough info
9. 9.🧩 Aarav bought 4 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹120 (b) not enough info (c) ₹35 (d) ₹30
10. 10.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 2 PM (d) 5 PM
11. 11.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
12. 12.🧩 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
13. 13.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
14. 14.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
15. 15.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
16. 16.🧩 Meera is 7 years old. Diya is 8 years older than Meera. How old is Diya? (a) 8 (b) 15 (c) 16 (d) not enough info
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Aarav is 12 years old. Kabir is 3 years older than Aarav. How old is Kabir? (a) 16 (b) not enough info (c) 3 (d) 15
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
20. 20.🧩 A box has 3 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 32 (c) 24 (d) 11
21. 21.🧩 Arjun bought 4 markers and a cap for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹116 (c) ₹120 (d) not enough info
22. 22.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
23. 23.🧩 Saanvi bought 5 balls for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹65 (b) not enough info (c) ₹300 (d) ₹60
24. 24.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
25. 25.🧩 Ananya is 10 years old. Aarav is older than Ananya. How old is Aarav? (a) not enough info (b) 12 (c) 15 (d) 11
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
30. 30.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) 50 (c) not enough info (d) 5
31. 31.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 28 (d) 24
32. 32.🧩 Meera bought 6 pens and a cap for ₹180 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹30 (c) ₹174 (d) ₹180
33. 33.🧩 A box has 7 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 56 (c) 64 (d) 15
34. 34.🧩 A box has 4 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 40 (b) not enough info (c) 32 (d) 12
35. 35.🧩 Ananya is 12 years old. Nisha is older than Ananya. How old is Nisha? (a) 17 (b) 14 (c) not enough info (d) 13
36. 36.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
37. 37.🧩 Arjun is 6 years old. Aarav is older than Arjun. How old is Aarav? (a) 7 (b) 8 (c) not enough info (d) 11
38. 38.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
39. 39.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
40. 40.🧩 A box has 8 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 15 (b) 63 (c) not enough info (d) 56

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