Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 897 · 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.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
2. 2.🧩 A box has 8 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) not enough info (b) 56 (c) 63 (d) 15
3. 3.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
5. 5.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
7. 7.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
8. 8.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
9. 9.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
11. 11.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) the colour of ink (d) your handwriting
12. 12.🧩 Kabir bought 3 mangoes and a bag for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹87 (b) ₹30 (c) ₹90 (d) not enough info
13. 13.🧩 Ishaan bought 6 kites and a cap for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹264 (b) ₹45 (c) not enough info (d) ₹270
14. 14.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) not enough info (d) 4 PM
15. 15.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 16 (d) 7
16. 16.🧩 Aarav bought 4 pens and a lunch box for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹200 (b) not enough info (c) ₹50 (d) ₹196
17. 17.🧩 Ananya bought 5 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹35 (c) ₹150 (d) ₹30
18. 18.🧩 Meera bought 6 kites and a cap for ₹420 in all. Each kite cost the same. What did one kite cost? (a) ₹414 (b) not enough info (c) ₹70 (d) ₹420
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.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
21. 21.🧩 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
22. 22.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
23. 23.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
24. 24.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
26. 26.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
27. 27.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 8 (b) not enough info (c) 20 (d) 15
28. 28.🧩 A box has 7 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 35 (d) 40
29. 29.🥭 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) no, check more (c) yes, mangoes match (d) no mango is sweet
30. 30.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
32. 32.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
33. 33.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) 48 (b) not enough info (c) 13 (d) 42
34. 34.🧩 Nisha bought 4 kites and a lunch box for ₹260 in all. Each kite cost the same. What did one kite cost? (a) ₹256 (b) not enough info (c) ₹260 (d) ₹65
35. 35.🧩 A box has 8 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 14 (b) 48 (c) not enough info (d) 54
36. 36.🧩 Diya is 9 years old. Tara is 7 years older than Diya. How old is Tara? (a) 17 (b) 7 (c) not enough info (d) 16
37. 37.🧩 A box has 7 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 48 (c) 42 (d) 13
38. 38.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
39. 39.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 6 PM
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True

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