Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 396 · 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.🧩 Ishaan bought 5 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹35 (c) ₹150 (d) not enough info
2. 2.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Aarav is 6 years old. Meera is older than Aarav. How old is Meera? (a) not enough info (b) 11 (c) 8 (d) 7
7. 7.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
10. 10.🧩 Nisha is 7 years old. Arjun is 4 years older than Nisha. How old is Arjun? (a) 4 (b) 11 (c) not enough info (d) 12
11. 11.🧩 Ishaan bought 2 mangoes and a lunch box for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹58 (b) ₹60 (c) not enough info (d) ₹30
12. 12.🧩 Saanvi bought 3 notebooks and a cap for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹47 (b) ₹16 (c) ₹50 (d) not enough info
13. 13.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
14. 14.🧩 Diya is 8 years old. Rohan is 3 years older than Diya. How old is Rohan? (a) 3 (b) not enough info (c) 12 (d) 11
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
17. 17.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
18. 18.🧩 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
19. 19.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
20. 20.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
23. 23.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
24. 24.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
25. 25.🧩 Rohan is 7 years old. Aarav is older than Rohan. How old is Aarav? (a) 12 (b) 8 (c) 9 (d) not enough info
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
28. 28.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
29. 29.🧩 Ishaan is 8 years old. Diya is 2 years older than Ishaan. How old is Diya? (a) 2 (b) not enough info (c) 11 (d) 10
30. 30.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
33. 33.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
34. 34.🧩 Rohan is 11 years old. Diya is older than Rohan. How old is Diya? (a) 16 (b) not enough info (c) 12 (d) 13
35. 35.🧩 Diya bought 3 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) ₹40 (c) not enough info (d) ₹45
36. 36.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
37. 37.🧩 Vihaan bought 6 balls and a water bottle for ₹260 in all. Each ball cost the same. What did one ball cost? (a) ₹254 (b) ₹260 (c) ₹43 (d) not enough info
38. 38.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
39. 39.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Diya bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) not enough info (c) ₹55 (d) ₹50

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