Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 683 · 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.🧩 Nisha is 6 years old. Ananya is 7 years older than Nisha. How old is Ananya? (a) 7 (b) not enough info (c) 14 (d) 13
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, check more (b) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
4. 4.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
7. 7.🧩 A box has 7 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 72 (b) 63 (c) not enough info (d) 16
8. 8.🧩 Diya bought 6 pens and a cap for ₹400 in all. Each pen cost the same. What did one pen cost? (a) ₹394 (b) ₹66 (c) not enough info (d) ₹400
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
11. 11.🧩 Diya bought 2 kites and a water bottle for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) not enough info (c) ₹70 (d) ₹138
12. 12.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 18 (b) 90 (c) not enough info (d) 9
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Diya bought 6 pens for ₹270 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹50 (c) not enough info (d) ₹270
15. 15.🧩 Arjun bought 6 mangoes for ₹270 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹270 (c) ₹50 (d) ₹45
16. 16.🧩 Ananya is 11 years old. Ishaan is 9 years older than Ananya. How old is Ishaan? (a) 20 (b) 21 (c) not enough info (d) 9
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
18. 18.📊 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
19. 19.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
20. 20.🧩 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
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
23. 23.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Saanvi bought 6 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹25 (c) ₹150 (d) not enough info
25. 25.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 10 PM (c) not enough info (d) 6 PM
26. 26.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
27. 27.🧩 Rohan bought 6 balls and a bag for ₹450 in all. Each ball cost the same. What did one ball cost? (a) ₹450 (b) ₹75 (c) not enough info (d) ₹444
28. 28.🧩 Vihaan is 10 years old. Tara is 2 years older than Vihaan. How old is Tara? (a) 13 (b) 12 (c) not enough info (d) 2
29. 29.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to be sure of results (d) to change answers
30. 30.🧩 Meera is 8 years old. Aarav is older than Meera. How old is Aarav? (a) not enough info (b) 9 (c) 13 (d) 10
31. 31.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
32. 32.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
33. 33.🧩 Ananya is 8 years old. Vihaan is 5 years older than Ananya. How old is Vihaan? (a) 14 (b) 13 (c) not enough info (d) 5
34. 34.🧩 Tara bought 4 balls and a water bottle for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹176 (c) ₹180 (d) not enough info
35. 35.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Vihaan is 6 years old. Nisha is 6 years older than Vihaan. How old is Nisha? (a) 6 (b) 12 (c) not enough info (d) 13
37. 37.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 8 PM (c) 9 PM (d) not enough info
38. 38.🧩 Arjun bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹55 (b) ₹250 (c) not enough info (d) ₹50
39. 39.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting

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