Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 97 · 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) yes, it is certain (b) no mango is sweet (c) yes, mangoes match (d) no, check more
2. 2.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
3. 3.🧩 A box has 5 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 25 (b) 10 (c) 30 (d) not enough info
4. 4.🧩 Diya bought 4 pens and a lunch box for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹210 (b) ₹52 (c) ₹206 (d) not enough info
5. 5.🧩 Saanvi bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) ₹275 (b) not enough info (c) ₹55 (d) ₹60
6. 6.🧩 Tara bought 2 mangoes for ₹110 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹110 (c) ₹60 (d) ₹55
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
9. 9.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 9 (c) 90 (d) not enough info
10. 10.🧩 Saanvi is 6 years old. Meera is 3 years older than Saanvi. How old is Meera? (a) 3 (b) 9 (c) not enough info (d) 10
11. 11.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
12. 12.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
13. 13.🧩 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
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
19. 19.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
20. 20.🧩 Saanvi bought 6 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹30 (c) ₹180 (d) not enough info
21. 21.🧩 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
22. 22.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
23. 23.🧩 Nisha bought 3 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹30 (c) ₹90 (d) ₹35
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
25. 25.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) 45 (b) not enough info (c) 40 (d) 13
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
27. 27.🧩 Nisha is 6 years old. Ananya is older than Nisha. How old is Ananya? (a) 7 (b) 8 (c) 11 (d) not enough info
28. 28.🧩 Kabir bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹90 (b) ₹20 (c) not enough info (d) ₹15
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
31. 31.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Arjun bought 3 mangoes and a cap for ₹230 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹227 (c) ₹76 (d) ₹230
33. 33.🧩 Meera is 10 years old. Nisha is 4 years older than Meera. How old is Nisha? (a) 4 (b) not enough info (c) 15 (d) 14
34. 34.🧩 A box has 8 rows of apples, with 9 in each row. How many apples are in the box? (a) 72 (b) 81 (c) 17 (d) not enough info
35. 35.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
38. 38.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
39. 39.🧩 Ananya bought 5 notebooks and a bag for ₹320 in all. Each notebook cost the same. What did one notebook cost? (a) ₹315 (b) not enough info (c) ₹64 (d) ₹320
40. 40.🧩 Nisha bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹45 (c) ₹15 (d) not enough info

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