Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 708 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
8. 8.🧩 Ananya bought 5 notebooks for ₹125 in all. Each notebook cost the same. What did one notebook cost? (a) ₹125 (b) not enough info (c) ₹30 (d) ₹25
9. 9.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
10. 10.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
11. 11.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
12. 12.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
13. 13.🧩 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
14. 14.🧩 Diya bought 4 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹80
15. 15.🧩 Tara bought 6 pens and a lunch box for ₹320 in all. Each pen cost the same. What did one pen cost? (a) ₹53 (b) not enough info (c) ₹320 (d) ₹314
16. 16.🧩 Meera is 10 years old. Diya is 4 years older than Meera. How old is Diya? (a) 4 (b) 15 (c) 14 (d) not enough info
17. 17.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
18. 18.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
19. 19.🧩 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
20. 20.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
21. 21.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
22. 22.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
23. 23.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
24. 24.🧩 Ishaan is 6 years old. Rohan is 8 years older than Ishaan. How old is Rohan? (a) 14 (b) 15 (c) 8 (d) not enough info
25. 25.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
26. 26.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box has 4 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 24 (b) 30 (c) 10 (d) not enough info
28. 28.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
29. 29.🧩 Diya bought 5 balls and a lunch box for ₹365 in all. Each ball cost the same. What did one ball cost? (a) ₹365 (b) not enough info (c) ₹360 (d) ₹73
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
31. 31.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
32. 32.🧩 Saanvi is 7 years old. Nisha is older than Saanvi. How old is Nisha? (a) not enough info (b) 12 (c) 8 (d) 9
33. 33.🧩 Rohan bought 6 kites and a water bottle for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹36 (b) ₹220 (c) not enough info (d) ₹214
34. 34.🧩 Nisha bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹15 (c) ₹40 (d) ₹10
35. 35.🧩 Nisha is 8 years old. Arjun is older than Nisha. How old is Arjun? (a) 9 (b) not enough info (c) 10 (d) 13
36. 36.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
37. 37.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
38. 38.🧩 Nisha bought 3 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) not enough info (c) ₹30 (d) ₹10
39. 39.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 8 (b) 16 (c) 80 (d) not enough info
40. 40.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class

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