Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 422 · 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 measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
2. 2.🧩 A box has 5 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) not enough info (b) 35 (c) 42 (d) 12
3. 3.🧩 Vihaan bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹65 (c) not enough info (d) ₹240
4. 4.🧩 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
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
6. 6.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
7. 7.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Ishaan bought 3 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) not enough info (c) ₹20 (d) ₹25
9. 9.🧩 Saanvi is 7 years old. Tara is 4 years older than Saanvi. How old is Tara? (a) 11 (b) not enough info (c) 4 (d) 12
10. 10.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
11. 11.🥭 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) yes, mangoes match (c) yes, it is certain (d) no, check more
12. 12.🧩 Nisha bought 6 balls and a bag for ₹230 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹38 (c) ₹224 (d) ₹230
13. 13.🧩 Nisha is 11 years old. Rohan is older than Nisha. How old is Rohan? (a) 12 (b) 16 (c) not enough info (d) 13
14. 14.🧩 Aarav is 12 years old. Kabir is 3 years older than Aarav. How old is Kabir? (a) 15 (b) not enough info (c) 16 (d) 3
15. 15.🧩 A box has 8 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 56 (b) not enough info (c) 63 (d) 15
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Ishaan bought 6 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹150 (b) not enough info (c) ₹30 (d) ₹25
19. 19.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
20. 20.🧩 Tara bought 2 kites and a bag for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹198 (b) ₹200 (c) not enough info (d) ₹100
21. 21.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 15 (c) 8 (d) 20
22. 22.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 4 PM (d) 7 PM
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
24. 24.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
25. 25.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
26. 26.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
27. 27.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
28. 28.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
29. 29.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Tara is 8 years old. Ananya is older than Tara. How old is Ananya? (a) 10 (b) not enough info (c) 13 (d) 9
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
33. 33.🧩 Ananya bought 6 notebooks and a bag for ₹400 in all. Each notebook cost the same. What did one notebook cost? (a) ₹66 (b) ₹394 (c) not enough info (d) ₹400
34. 34.🧩 Rohan bought 3 balls for ₹45 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹20 (c) ₹15 (d) not enough info
35. 35.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
36. 36.📊 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
37. 37.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
38. 38.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 12 (b) 7 (c) 16 (d) not enough info
39. 39.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
40. 40.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM

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