Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 195 · 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? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
3. 3.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
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Tara bought 4 balls and a bag for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹96 (b) ₹25 (c) ₹100 (d) not enough info
6. 6.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
9. 9.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
12. 12.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
13. 13.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Diya is 9 years old. Ananya is 5 years older than Diya. How old is Ananya? (a) 15 (b) 14 (c) 5 (d) not enough info
16. 16.🧩 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
17. 17.🧩 Vihaan bought 3 mangoes for ₹45 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹45
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
19. 19.🧩 Diya bought 5 mangoes and a water bottle for ₹280 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹56 (c) ₹280 (d) ₹275
20. 20.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
21. 21.🧩 A box has 8 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 15 (b) 56 (c) 63 (d) not enough info
22. 22.🧩 Meera is 12 years old. Saanvi is 2 years older than Meera. How old is Saanvi? (a) 14 (b) 2 (c) not enough info (d) 15
23. 23.🧩 Nisha bought 2 kites and a cap for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹110 (b) ₹108 (c) ₹55 (d) not enough info
24. 24.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) not enough info (b) 80 (c) 16 (d) 8
25. 25.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
26. 26.🧩 Rohan is 8 years old. Saanvi is older than Rohan. How old is Saanvi? (a) not enough info (b) 9 (c) 13 (d) 10
27. 27.🧩 Meera is 12 years old. Aarav is older than Meera. How old is Aarav? (a) 17 (b) 14 (c) not enough info (d) 13
28. 28.🧩 Meera bought 6 mangoes and a cap for ₹410 in all. Each mango cost the same. What did one mango cost? (a) ₹410 (b) ₹68 (c) ₹404 (d) not enough info
29. 29.🧩 Aarav bought 5 pens and a water bottle for ₹155 in all. Each pen cost the same. What did one pen cost? (a) ₹31 (b) ₹150 (c) ₹155 (d) not enough info
30. 30.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
32. 32.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 9 (b) not enough info (c) 24 (d) 18
33. 33.🧩 Ishaan bought 2 notebooks for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹70
34. 34.🧩 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
35. 35.🧩 Vihaan is 7 years old. Nisha is older than Vihaan. How old is Nisha? (a) not enough info (b) 12 (c) 9 (d) 8
36. 36.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
37. 37.🧩 A box has 4 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 35 (c) 11 (d) 28
38. 38.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
39. 39.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
40. 40.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion

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