Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 409 · 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? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
4. 4.🧩 Kabir bought 5 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹100 (c) ₹25 (d) ₹20
5. 5.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
9. 9.🧩 Aarav bought 3 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹20 (c) ₹60 (d) ₹25
10. 10.🧩 Ishaan is 6 years old. Ananya is 8 years older than Ishaan. How old is Ananya? (a) not enough info (b) 8 (c) 15 (d) 14
11. 11.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 9 PM
12. 12.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
13. 13.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
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.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
18. 18.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 72 (c) 16 (d) 64
19. 19.🧩 Meera is 11 years old. Ananya is 9 years older than Meera. How old is Ananya? (a) 9 (b) 20 (c) not enough info (d) 21
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
21. 21.🧩 Vihaan bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹240 (b) ₹60 (c) ₹65 (d) not enough info
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
23. 23.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
24. 24.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
25. 25.🧩 Diya bought 4 mangoes and a bag for ₹330 in all. Each mango cost the same. What did one mango cost? (a) ₹82 (b) ₹330 (c) ₹326 (d) not enough info
26. 26.🧩 Vihaan bought 3 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹180 (b) ₹65 (c) not enough info (d) ₹60
27. 27.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 13 (b) 45 (c) not enough info (d) 36
28. 28.🧩 Meera is 7 years old. Tara is 8 years older than Meera. How old is Tara? (a) 8 (b) 15 (c) 16 (d) not enough info
29. 29.🧩 Nisha bought 6 notebooks for ₹270 in all. Each notebook cost the same. What did one notebook cost? (a) ₹270 (b) ₹50 (c) ₹45 (d) not enough info
30. 30.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) not enough info (b) 5 (c) 50 (d) 10
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
32. 32.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
33. 33.🧩 Kabir bought 2 balls and a cap for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹60 (c) ₹118 (d) not enough info
34. 34.🧩 Saanvi bought 3 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹90 (c) ₹30 (d) ₹35
35. 35.🧩 Diya is 9 years old. Aarav is 5 years older than Diya. How old is Aarav? (a) 5 (b) not enough info (c) 15 (d) 14
36. 36.🧩 Arjun is 7 years old. Meera is 4 years older than Arjun. How old is Meera? (a) 12 (b) 4 (c) not enough info (d) 11
37. 37.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
38. 38.🧩 Vihaan is 12 years old. Diya is older than Vihaan. How old is Diya? (a) not enough info (b) 17 (c) 13 (d) 14
39. 39.🧩 Aarav bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹30 (c) ₹180 (d) not enough info
40. 40.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 30 (b) 35 (c) not enough info (d) 11

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