Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 377 · 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? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box has 4 rows of apples, with 9 in each row. How many apples are in the box? (a) 36 (b) 45 (c) 13 (d) not enough info
3. 3.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
4. 4.🥭 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) yes, it is certain (d) no mango is sweet
5. 5.🧩 Kabir bought 2 markers and a water bottle for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹98 (c) ₹50 (d) ₹100
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
7. 7.🧩 Ishaan is 8 years old. Ananya is older than Ishaan. How old is Ananya? (a) not enough info (b) 10 (c) 13 (d) 9
8. 8.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
9. 9.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
10. 10.🧩 Ananya bought 6 notebooks for ₹360 in all. Each notebook cost the same. What did one notebook cost? (a) ₹360 (b) ₹65 (c) not enough info (d) ₹60
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
14. 14.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) 14 (b) 48 (c) not enough info (d) 54
15. 15.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
17. 17.🧩 A box has 5 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 13 (b) not enough info (c) 40 (d) 48
18. 18.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) not enough info (b) 40 (c) 4 (d) 8
19. 19.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) 50 (c) not enough info (d) 5
20. 20.🧩 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
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
22. 22.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) not enough info (c) 10 (d) 50
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Nisha bought 6 notebooks and a cap for ₹350 in all. Each notebook cost the same. What did one notebook cost? (a) ₹350 (b) not enough info (c) ₹344 (d) ₹58
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
26. 26.🧩 A box has 5 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 35 (c) 42 (d) 12
27. 27.🧩 Ananya is 11 years old. Vihaan is older than Ananya. How old is Vihaan? (a) not enough info (b) 16 (c) 13 (d) 12
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
29. 29.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
30. 30.🧩 Kabir is 7 years old. Saanvi is older than Kabir. How old is Saanvi? (a) 9 (b) 8 (c) 12 (d) not enough info
31. 31.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
32. 32.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 4 PM
33. 33.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 42 (b) 49 (c) not enough info (d) 13
34. 34.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
35. 35.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 90 (b) not enough info (c) 9 (d) 18
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
37. 37.📊 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
38. 38.🧩 Tara is 11 years old. Kabir is older than Tara. How old is Kabir? (a) not enough info (b) 13 (c) 12 (d) 16
39. 39.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
40. 40.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 12 (c) not enough info (d) 60

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