Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 870 · 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.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 24 (b) 9 (c) 18 (d) not enough info
2. 2.🧩 Diya bought 5 markers and a bag for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹85 (b) ₹90 (c) not enough info (d) ₹18
3. 3.🧩 Saanvi is 11 years old. Meera is 8 years older than Saanvi. How old is Meera? (a) 19 (b) not enough info (c) 8 (d) 20
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
5. 5.📊 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
6. 6.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
7. 7.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
11. 11.🧩 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
12. 12.🧩 Vihaan bought 3 notebooks for ₹45 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹45
13. 13.🧩 Tara bought 4 mangoes and a bag for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹42 (b) ₹170 (c) ₹166 (d) not enough info
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
16. 16.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
17. 17.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
18. 18.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Nisha bought 2 notebooks and a water bottle for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹70 (b) ₹140 (c) ₹138 (d) not enough info
21. 21.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
22. 22.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) 7 PM (d) not enough info
23. 23.🧩 Diya is 8 years old. Nisha is 5 years older than Diya. How old is Nisha? (a) 14 (b) 13 (c) not enough info (d) 5
24. 24.🧩 Ishaan is 7 years old. Tara is older than Ishaan. How old is Tara? (a) 9 (b) 8 (c) 12 (d) not enough info
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Kabir is 12 years old. Ananya is 4 years older than Kabir. How old is Ananya? (a) not enough info (b) 4 (c) 16 (d) 17
27. 27.🧩 Aarav bought 4 markers for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹220 (c) not enough info (d) ₹55
28. 28.🧩 Vihaan is 7 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) 12 (b) 8 (c) 9 (d) not enough info
29. 29.🧩 Diya bought 4 balls and a lunch box for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) ₹30 (c) not enough info (d) ₹116
30. 30.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
31. 31.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Kabir bought 2 balls for ₹30 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹30 (c) not enough info (d) ₹15
33. 33.🧩 Kabir bought 6 balls and a cap for ₹280 in all. Each ball cost the same. What did one ball cost? (a) ₹46 (b) ₹280 (c) ₹274 (d) not enough info
34. 34.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
35. 35.🧩 Arjun is 11 years old. Kabir is 5 years older than Arjun. How old is Kabir? (a) 17 (b) 5 (c) not enough info (d) 16
36. 36.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
37. 37.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
38. 38.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Vihaan is 7 years old. Ishaan is older than Vihaan. How old is Ishaan? (a) 9 (b) 8 (c) 12 (d) not enough info
40. 40.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info

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