Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 476 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
4. 4.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 32 (b) 24 (c) not enough info (d) 11
5. 5.🥭 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
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
7. 7.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 9 (b) 20 (c) 24 (d) not enough info
8. 8.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 3 PM (d) 7 PM
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Rohan bought 2 kites and a cap for ₹130 in all. Each kite cost the same. What did one kite cost? (a) ₹130 (b) ₹128 (c) ₹65 (d) not enough info
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
13. 13.🧩 Nisha bought 5 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹300 (c) ₹60 (d) not enough info
14. 14.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
15. 15.🧩 Saanvi is 9 years old. Arjun is older than Saanvi. How old is Arjun? (a) 10 (b) not enough info (c) 14 (d) 11
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
17. 17.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
19. 19.🧩 Kabir bought 5 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹25 (c) ₹100 (d) ₹20
20. 20.🧩 Kabir is 12 years old. Ishaan is 4 years older than Kabir. How old is Ishaan? (a) 16 (b) not enough info (c) 4 (d) 17
21. 21.🧩 Diya is 6 years old. Arjun is older than Diya. How old is Arjun? (a) 8 (b) 11 (c) 7 (d) not enough info
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
23. 23.🧩 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
24. 24.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
25. 25.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
26. 26.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
27. 27.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
28. 28.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
30. 30.🧩 A box has 5 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 24 (b) not enough info (c) 20 (d) 9
31. 31.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
32. 32.🧩 Ishaan bought 5 kites and a water bottle for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹48 (b) ₹240 (c) not enough info (d) ₹235
33. 33.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
35. 35.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
36. 36.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
37. 37.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False

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