Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 955 · 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.🥭 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
2. 2.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 7 (b) 16 (c) not enough info (d) 12
3. 3.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
4. 4.🧩 Kabir bought 4 notebooks for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹160 (c) ₹45 (d) ₹40
5. 5.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
6. 6.🧩 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
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
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.🧩 Aarav bought 5 kites and a water bottle for ₹105 in all. Each kite cost the same. What did one kite cost? (a) ₹100 (b) ₹21 (c) ₹105 (d) not enough info
11. 11.🧩 Aarav is 11 years old. Nisha is 7 years older than Aarav. How old is Nisha? (a) not enough info (b) 18 (c) 19 (d) 7
12. 12.📊 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
13. 13.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
14. 14.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
15. 15.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info
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 3 rows of apples, with 4 in each row. How many apples are in the box? (a) 7 (b) 16 (c) not enough info (d) 12
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
22. 22.🧩 A box has 3 rows of oranges, with 8 in each row. How many oranges are in the box? (a) not enough info (b) 24 (c) 32 (d) 11
23. 23.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
24. 24.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
25. 25.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 8 PM (c) 9 PM (d) not enough info
26. 26.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 2 PM (d) 4 PM
27. 27.🧩 Kabir is 6 years old. Tara is 2 years older than Kabir. How old is Tara? (a) 2 (b) not enough info (c) 9 (d) 8
28. 28.🧩 Vihaan is 8 years old. Meera is older than Vihaan. How old is Meera? (a) 10 (b) not enough info (c) 13 (d) 9
29. 29.🧩 Diya is 7 years old. Ishaan is older than Diya. How old is Ishaan? (a) 8 (b) not enough info (c) 12 (d) 9
30. 30.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Rohan bought 2 markers and a bag for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹70 (b) ₹138 (c) not enough info (d) ₹140
32. 32.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
33. 33.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
34. 34.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
35. 35.🧩 Tara bought 2 mangoes and a bag for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹170 (b) ₹85 (c) ₹168 (d) not enough info
36. 36.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 13 (b) 42 (c) 49 (d) not enough info
37. 37.🧩 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
38. 38.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
39. 39.🧩 Tara bought 6 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹120
40. 40.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) not enough info (c) 4 (d) 8

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