Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 27 · 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.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
2. 2.🧩 Nisha is 9 years old. Aarav is 5 years older than Nisha. How old is Aarav? (a) 14 (b) 5 (c) not enough info (d) 15
3. 3.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Kabir bought 4 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹35 (c) ₹120 (d) not enough info
5. 5.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Aarav is 6 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 8 (b) 11 (c) not enough info (d) 7
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
9. 9.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
10. 10.🧩 Rohan bought 5 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) not enough info (c) ₹200 (d) ₹40
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
13. 13.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
14. 14.🧩 Kabir bought 2 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹50
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
16. 16.🧩 A box has 6 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 56 (b) 14 (c) not enough info (d) 48
17. 17.🧩 Arjun bought 6 notebooks and a water bottle for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) ₹120 (c) ₹114 (d) not enough info
18. 18.🧩 A box has 8 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 40 (b) 45 (c) not enough info (d) 13
19. 19.🥭 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) yes, mangoes match (c) yes, it is certain (d) no, check more
20. 20.🧩 Rohan is 6 years old. Tara is older than Rohan. How old is Tara? (a) 11 (b) 7 (c) 8 (d) not enough info
21. 21.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Vihaan bought 2 balls for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹80 (b) not enough info (c) ₹45 (d) ₹40
23. 23.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
24. 24.🧩 Aarav is 8 years old. Vihaan is older than Aarav. How old is Vihaan? (a) 10 (b) 9 (c) not enough info (d) 13
25. 25.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
26. 26.🧩 Diya is 7 years old. Nisha is 3 years older than Diya. How old is Nisha? (a) 3 (b) not enough info (c) 10 (d) 11
27. 27.🧩 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
28. 28.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
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
30. 30.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
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.🧩 Diya is 9 years old. Meera is 8 years older than Diya. How old is Meera? (a) 8 (b) 17 (c) not enough info (d) 18
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
35. 35.🧩 Ananya is 8 years old. Vihaan is 7 years older than Ananya. How old is Vihaan? (a) not enough info (b) 7 (c) 16 (d) 15
36. 36.🧩 A box has 4 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 9 (c) 25 (d) 20
37. 37.🧩 A box has 4 rows of apples, with 7 in each row. How many apples are in the box? (a) 35 (b) not enough info (c) 28 (d) 11
38. 38.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
39. 39.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
40. 40.🧩 Meera is 7 years old. Ishaan is 8 years older than Meera. How old is Ishaan? (a) not enough info (b) 8 (c) 16 (d) 15

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