Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 638 · 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.” gives enough evidence. (a) True (b) False
2. 2.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) not enough info (b) 6 (c) 60 (d) 12
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
5. 5.🧩 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
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) False (b) True
7. 7.🧩 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
8. 8.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
9. 9.🧩 Ishaan bought 4 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) ₹40 (c) ₹10 (d) not enough info
10. 10.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
11. 11.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
12. 12.🧩 Diya is 12 years old. Saanvi is 9 years older than Diya. How old is Saanvi? (a) not enough info (b) 22 (c) 9 (d) 21
13. 13.🧩 Saanvi bought 3 pens and a lunch box for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹26 (b) ₹80 (c) ₹77 (d) not enough info
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
16. 16.🧩 Meera bought 2 kites and a bag for ₹80 in all. Each kite cost the same. What did one kite cost? (a) ₹78 (b) not enough info (c) ₹40 (d) ₹80
17. 17.🧩 Diya is 7 years old. Ananya is older than Diya. How old is Ananya? (a) not enough info (b) 12 (c) 8 (d) 9
18. 18.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
19. 19.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
20. 20.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
21. 21.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
23. 23.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
24. 24.🧩 Nisha is 7 years old. Saanvi is older than Nisha. How old is Saanvi? (a) 9 (b) 12 (c) not enough info (d) 8
25. 25.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
27. 27.🧩 Saanvi bought 5 pens and a bag for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹145 (b) ₹30 (c) ₹150 (d) not enough info
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
29. 29.🥭 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
30. 30.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
31. 31.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 28 (b) 10 (c) not enough info (d) 24
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
33. 33.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Tara bought 6 notebooks and a water bottle for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) not enough info (c) ₹50 (d) ₹294
35. 35.🧩 Diya is 8 years old. Nisha is 6 years older than Diya. How old is Nisha? (a) 6 (b) 15 (c) 14 (d) not enough info
36. 36.🧩 Arjun bought 4 kites and a water bottle for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹67 (b) ₹270 (c) ₹266 (d) not enough info
37. 37.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
38. 38.🧩 Saanvi is 11 years old. Tara is 8 years older than Saanvi. How old is Tara? (a) not enough info (b) 19 (c) 20 (d) 8
39. 39.🧩 Aarav bought 3 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹20 (d) ₹25
40. 40.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False

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