Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 577 · 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.🥭 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
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Vihaan bought 3 markers for ₹30 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) not enough info (c) ₹30 (d) ₹10
4. 4.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
5. 5.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Arjun is 7 years old. Nisha is 8 years older than Arjun. How old is Nisha? (a) 8 (b) 15 (c) not enough info (d) 16
8. 8.🧩 Aarav is 6 years old. Kabir is 6 years older than Aarav. How old is Kabir? (a) 13 (b) 6 (c) not enough info (d) 12
9. 9.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
10. 10.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
11. 11.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
12. 12.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
13. 13.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
14. 14.🧩 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
15. 15.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
17. 17.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
18. 18.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
20. 20.🧩 Aarav is 7 years old. Kabir is older than Aarav. How old is Kabir? (a) 8 (b) not enough info (c) 12 (d) 9
21. 21.🧩 Ishaan bought 2 mangoes and a water bottle for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹118 (b) not enough info (c) ₹120 (d) ₹60
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Arjun is 8 years old. Meera is older than Arjun. How old is Meera? (a) not enough info (b) 9 (c) 13 (d) 10
24. 24.🧩 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
25. 25.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 70 (b) 7 (c) not enough info (d) 14
26. 26.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 40 (b) not enough info (c) 12 (d) 35
27. 27.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
28. 28.🧩 Vihaan bought 6 pens and a cap for ₹210 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹204 (c) ₹35 (d) ₹210
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.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
31. 31.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
32. 32.🧩 Ananya is 7 years old. Tara is older than Ananya. How old is Tara? (a) 8 (b) 9 (c) not enough info (d) 12
33. 33.🧩 A box has 8 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 36 (c) 32 (d) 12
34. 34.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
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
36. 36.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
37. 37.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
38. 38.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
39. 39.🧩 A box has 6 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 56 (b) 48 (c) not enough info (d) 14
40. 40.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence

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