Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 879 · 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 tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
2. 2.🥭 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, it is certain (c) no, check more (d) yes, mangoes match
3. 3.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
4. 4.🧩 Rohan is 7 years old. Ishaan is 2 years older than Rohan. How old is Ishaan? (a) 2 (b) not enough info (c) 10 (d) 9
5. 5.🧩 Nisha is 11 years old. Diya is older than Nisha. How old is Diya? (a) not enough info (b) 12 (c) 13 (d) 16
6. 6.🧩 Kabir bought 4 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹180 (c) ₹50 (d) ₹45
7. 7.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) 9 (c) 90 (d) not enough info
8. 8.🧩 Kabir bought 6 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹90
9. 9.🧩 Diya is 11 years old. Vihaan is 4 years older than Diya. How old is Vihaan? (a) not enough info (b) 16 (c) 4 (d) 15
10. 10.🐕 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
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
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.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 35 (c) 11 (d) 30
14. 14.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 4 PM
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
16. 16.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
18. 18.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Kabir bought 4 balls and a water bottle for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹30 (c) not enough info (d) ₹116
21. 21.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) asking the whole class (d) guessing
22. 22.🧩 A box has 7 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 12 (c) 35 (d) 40
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Arjun is 6 years old. Nisha is older than Arjun. How old is Nisha? (a) 8 (b) 11 (c) 7 (d) not enough info
25. 25.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 9 PM
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
27. 27.🧩 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
28. 28.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
29. 29.🧩 Diya bought 3 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹30 (d) ₹10
30. 30.🧩 Vihaan is 7 years old. Meera is older than Vihaan. How old is Meera? (a) 8 (b) not enough info (c) 9 (d) 12
31. 31.🧩 Ananya is 6 years old. Meera is older than Ananya. How old is Meera? (a) 7 (b) 8 (c) 11 (d) not enough info
32. 32.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 6 PM (c) 4 PM (d) not enough info
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Kabir bought 2 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹55 (b) ₹100 (c) not enough info (d) ₹50
35. 35.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
36. 36.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
37. 37.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
38. 38.🧩 Ananya is 12 years old. Tara is older than Ananya. How old is Tara? (a) not enough info (b) 17 (c) 14 (d) 13
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
40. 40.🧩 Tara is 9 years old. Nisha is 3 years older than Tara. How old is Nisha? (a) 13 (b) not enough info (c) 3 (d) 12

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