Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 982 · 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? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
3. 3.🧩 Kabir bought 3 markers and a bag for ₹155 in all. Each marker cost the same. What did one marker cost? (a) ₹51 (b) ₹152 (c) not enough info (d) ₹155
4. 4.🧩 A box has 7 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 12 (b) 35 (c) 40 (d) not enough info
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) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
7. 7.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
8. 8.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 30 (b) 11 (c) not enough info (d) 35
9. 9.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
11. 11.🧩 Rohan is 11 years old. Ananya is older than Rohan. How old is Ananya? (a) 13 (b) 12 (c) not enough info (d) 16
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
13. 13.🧩 Nisha bought 5 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹10 (c) ₹15 (d) not enough info
14. 14.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
15. 15.🧩 Diya bought 3 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹60
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.🧩 A box has 8 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 15 (b) 63 (c) 56 (d) not enough info
18. 18.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
21. 21.🧩 Ananya bought 2 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹90 (b) ₹50 (c) not enough info (d) ₹45
22. 22.🧩 Diya is 11 years old. Rohan is 3 years older than Diya. How old is Rohan? (a) not enough info (b) 14 (c) 15 (d) 3
23. 23.🧩 Ishaan bought 5 notebooks and a bag for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) not enough info (c) ₹170 (d) ₹175
24. 24.🧩 Kabir bought 3 balls for ₹135 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹50 (c) not enough info (d) ₹135
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
26. 26.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 42 (c) 48 (d) 13
27. 27.🧩 Ishaan is 10 years old. Meera is 6 years older than Ishaan. How old is Meera? (a) 17 (b) not enough info (c) 16 (d) 6
28. 28.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
29. 29.🧩 A box has 3 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 15 (b) 20 (c) 8 (d) not enough info
30. 30.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
31. 31.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
32. 32.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Rohan bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹65 (b) not enough info (c) ₹60 (d) ₹240
35. 35.🧩 Nisha is 12 years old. Tara is 3 years older than Nisha. How old is Tara? (a) not enough info (b) 3 (c) 16 (d) 15
36. 36.🧩 Aarav is 8 years old. Rohan is 2 years older than Aarav. How old is Rohan? (a) 2 (b) 10 (c) not enough info (d) 11
37. 37.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
38. 38.🧩 Nisha bought 2 kites and a bag for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹120 (c) ₹118 (d) not enough info
39. 39.🧩 A box has 6 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 42 (b) 36 (c) not enough info (d) 12
40. 40.🧩 Kabir bought 6 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹120 (c) ₹20 (d) not enough info

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