Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 503 · 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 tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
3. 3.🧩 Ananya bought 3 kites and a bag for ₹235 in all. Each kite cost the same. What did one kite cost? (a) ₹78 (b) not enough info (c) ₹235 (d) ₹232
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 4 PM (c) 2 PM (d) not enough info
6. 6.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 9 (b) 24 (c) not enough info (d) 20
11. 11.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
12. 12.🧩 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
13. 13.🧩 Ishaan bought 3 balls and a cap for ₹95 in all. Each ball cost the same. What did one ball cost? (a) ₹31 (b) not enough info (c) ₹92 (d) ₹95
14. 14.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
17. 17.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 6 PM (c) 9 PM (d) not enough info
18. 18.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
19. 19.🧩 Diya bought 3 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹60 (d) ₹25
20. 20.🧩 Rohan bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹90
21. 21.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
22. 22.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) no, check more (c) yes, mangoes match (d) yes, it is certain
23. 23.🧩 Vihaan is 11 years old. Saanvi is 6 years older than Vihaan. How old is Saanvi? (a) 17 (b) 6 (c) 18 (d) not enough info
24. 24.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
25. 25.🧩 Tara bought 3 mangoes for ₹165 in all. Each mango cost the same. What did one mango cost? (a) ₹55 (b) ₹60 (c) not enough info (d) ₹165
26. 26.🧩 Kabir is 7 years old. Meera is older than Kabir. How old is Meera? (a) 8 (b) 9 (c) not enough info (d) 12
27. 27.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 48 (c) 13 (d) 40
28. 28.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) not enough info (d) 6 PM
29. 29.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Ananya bought 6 notebooks and a lunch box for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹16 (b) not enough info (c) ₹100 (d) ₹94
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.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 40 (b) 4 (c) not enough info (d) 8
33. 33.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
34. 34.🧩 Diya bought 2 kites and a water bottle for ₹70 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹68 (c) not enough info (d) ₹70
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Diya bought 6 notebooks and a bag for ₹280 in all. Each notebook cost the same. What did one notebook cost? (a) ₹46 (b) ₹280 (c) not enough info (d) ₹274
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
38. 38.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box has 5 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 14 (b) 54 (c) not enough info (d) 45
40. 40.🧩 Tara bought 3 mangoes and a water bottle for ₹105 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹105 (c) not enough info (d) ₹102

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