Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 154 · 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 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
2. 2.🧩 A box has 5 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 11 (b) 30 (c) not enough info (d) 36
3. 3.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
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (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.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
7. 7.🧩 Aarav is 10 years old. Meera is 4 years older than Aarav. How old is Meera? (a) 4 (b) 14 (c) 15 (d) not enough info
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Aarav bought 4 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹15 (c) ₹40 (d) ₹10
11. 11.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 4 PM (c) 7 PM (d) not enough info
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
14. 14.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
15. 15.🧩 Ishaan bought 2 kites and a lunch box for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) not enough info (c) ₹138 (d) ₹70
16. 16.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
18. 18.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
19. 19.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Ananya is 12 years old. Nisha is older than Ananya. How old is Nisha? (a) not enough info (b) 17 (c) 14 (d) 13
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
22. 22.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 49 (b) 42 (c) not enough info (d) 13
23. 23.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
24. 24.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
25. 25.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
26. 26.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Diya bought 6 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹120 (b) not enough info (c) ₹20 (d) ₹25
28. 28.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
29. 29.🧩 Tara bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹10
30. 30.🧩 Ishaan is 8 years old. Meera is older than Ishaan. How old is Meera? (a) 9 (b) not enough info (c) 13 (d) 10
31. 31.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
32. 32.🧩 Ananya is 12 years old. Diya is 3 years older than Ananya. How old is Diya? (a) 16 (b) 15 (c) not enough info (d) 3
33. 33.🧩 Nisha is 11 years old. Aarav is older than Nisha. How old is Aarav? (a) not enough info (b) 13 (c) 16 (d) 12
34. 34.🧩 Ananya bought 4 kites and a water bottle for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹236 (b) not enough info (c) ₹60 (d) ₹240
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
36. 36.🧩 Ishaan is 10 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 15 (b) not enough info (c) 12 (d) 11
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
39. 39.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
40. 40.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

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