Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 415 · 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 checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
2. 2.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 4 PM (c) 7 PM (d) 8 PM
3. 3.🧩 Arjun is 11 years old. Ishaan is 4 years older than Arjun. How old is Ishaan? (a) 15 (b) 4 (c) 16 (d) not enough info
4. 4.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Arjun bought 2 notebooks for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) ₹60 (c) not enough info (d) ₹55
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
8. 8.🧩 Arjun is 6 years old. Ishaan is 9 years older than Arjun. How old is Ishaan? (a) not enough info (b) 16 (c) 15 (d) 9
9. 9.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
10. 10.🧩 Ananya is 7 years old. Tara is 4 years older than Ananya. How old is Tara? (a) not enough info (b) 12 (c) 4 (d) 11
11. 11.🧩 Ishaan is 9 years old. Saanvi is older than Ishaan. How old is Saanvi? (a) 11 (b) 14 (c) not enough info (d) 10
12. 12.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 2 PM
13. 13.🧩 A box has 6 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 13 (b) 42 (c) not enough info (d) 49
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
15. 15.🧩 Diya bought 5 markers and a water bottle for ₹350 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹345 (c) ₹70 (d) ₹350
16. 16.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
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
18. 18.🧩 A box has 4 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 25 (b) not enough info (c) 20 (d) 9
19. 19.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
20. 20.🧩 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
21. 21.🧩 Meera bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) ₹25 (c) not enough info (d) ₹30
22. 22.🧩 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
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
24. 24.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
25. 25.🧩 Vihaan bought 2 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) not enough info (c) ₹80 (d) ₹45
26. 26.🧩 Nisha bought 2 markers and a water bottle for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹138 (b) not enough info (c) ₹70 (d) ₹140
27. 27.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) 5 (c) not enough info (d) 50
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
29. 29.🧩 Meera bought 5 kites and a lunch box for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹195 (c) not enough info (d) ₹200
30. 30.🧩 Kabir bought 4 mangoes for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹35 (c) not enough info (d) ₹140
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
33. 33.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 54 (c) 48 (d) 14
34. 34.🧩 Diya is 12 years old. Ishaan is older than Diya. How old is Ishaan? (a) 17 (b) not enough info (c) 13 (d) 14
35. 35.🧩 Nisha is 8 years old. Arjun is 4 years older than Nisha. How old is Arjun? (a) 4 (b) not enough info (c) 12 (d) 13
36. 36.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
37. 37.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 9 PM
38. 38.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 10 PM (d) 9 PM
39. 39.🧩 Arjun bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹10
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence

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