Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 194 · 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.🧩 Tara is 11 years old. Kabir is older than Tara. How old is Kabir? (a) 13 (b) 12 (c) 16 (d) not enough info
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
3. 3.🧩 A box has 6 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 30 (b) 11 (c) 35 (d) not enough info
4. 4.🧩 Meera bought 5 kites for ₹275 in all. Each kite cost the same. What did one kite cost? (a) ₹275 (b) not enough info (c) ₹55 (d) ₹60
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Aarav is 9 years old. Diya is 7 years older than Aarav. How old is Diya? (a) 16 (b) 7 (c) not enough info (d) 17
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) not enough info (b) 7 (c) 70 (d) 14
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
10. 10.🥭 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) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
11. 11.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
12. 12.🧩 Aarav is 8 years old. Nisha is older than Aarav. How old is Nisha? (a) 9 (b) 10 (c) not enough info (d) 13
13. 13.🧩 Kabir is 6 years old. Nisha is 2 years older than Kabir. How old is Nisha? (a) 2 (b) not enough info (c) 8 (d) 9
14. 14.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
15. 15.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 20 (b) not enough info (c) 9 (d) 25
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
17. 17.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 3 PM (c) 6 PM (d) 7 PM
18. 18.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
23. 23.🧩 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
24. 24.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 5 PM (c) not enough info (d) 7 PM
25. 25.🧩 Saanvi bought 4 notebooks and a water bottle for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) ₹176 (c) not enough info (d) ₹45
26. 26.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 7 PM
27. 27.🧩 Kabir bought 5 notebooks and a lunch box for ₹315 in all. Each notebook cost the same. What did one notebook cost? (a) ₹310 (b) ₹315 (c) not enough info (d) ₹63
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
31. 31.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
32. 32.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Meera is 11 years old. Diya is older than Meera. How old is Diya? (a) 13 (b) 16 (c) not enough info (d) 12
35. 35.🧩 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
36. 36.🧩 A box has 8 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 36 (b) 12 (c) 32 (d) not enough info
37. 37.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Saanvi is 10 years old. Rohan is 7 years older than Saanvi. How old is Rohan? (a) not enough info (b) 17 (c) 7 (d) 18
39. 39.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
40. 40.🧩 Meera bought 4 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹120

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