Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 133 · 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.🧩 Kabir bought 2 notebooks and a cap for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) ₹170 (b) not enough info (c) ₹168 (d) ₹85
2. 2.🧩 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
3. 3.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
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.🧩 Rohan bought 6 pens and a cap for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹140 (b) not enough info (c) ₹134 (d) ₹23
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Saanvi bought 4 pens for ₹220 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) not enough info (c) ₹60 (d) ₹220
9. 9.🧩 Aarav is 6 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 11 (b) 8 (c) 7 (d) not enough info
10. 10.🧩 A box has 7 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 42 (b) not enough info (c) 48 (d) 13
11. 11.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
13. 13.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
14. 14.🧩 A box has 4 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 25 (b) not enough info (c) 9 (d) 20
15. 15.🧩 Ananya is 7 years old. Diya is 8 years older than Ananya. How old is Diya? (a) not enough info (b) 15 (c) 16 (d) 8
16. 16.🧩 Aarav bought 2 kites and a lunch box for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹178 (b) ₹90 (c) ₹180 (d) not enough info
17. 17.🧩 Kabir bought 2 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹80 (b) ₹45 (c) ₹40 (d) not enough info
18. 18.🧩 Diya bought 6 kites and a bag for ₹230 in all. Each kite cost the same. What did one kite cost? (a) ₹38 (b) ₹230 (c) ₹224 (d) not enough info
19. 19.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
20. 20.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
21. 21.🧩 Arjun is 9 years old. Vihaan is 3 years older than Arjun. How old is Vihaan? (a) 13 (b) not enough info (c) 12 (d) 3
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Arjun bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹10 (b) ₹15 (c) not enough info (d) ₹20
24. 24.🧩 Arjun is 8 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 9 (b) 13 (c) 10 (d) not enough info
25. 25.🧩 Vihaan is 8 years old. Aarav is older than Vihaan. How old is Aarav? (a) 10 (b) not enough info (c) 9 (d) 13
26. 26.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
27. 27.📊 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
28. 28.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
29. 29.🧩 Vihaan bought 5 markers and a bag for ₹165 in all. Each marker cost the same. What did one marker cost? (a) ₹33 (b) ₹165 (c) ₹160 (d) not enough info
30. 30.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 5 PM (d) 8 PM
31. 31.🧩 Ishaan is 8 years old. Kabir is older than Ishaan. How old is Kabir? (a) 10 (b) not enough info (c) 13 (d) 9
32. 32.🧩 Diya bought 2 mangoes and a water bottle for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹130 (b) ₹128 (c) ₹65 (d) not enough info
33. 33.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
34. 34.🧩 A box has 7 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 15 (c) 64 (d) 56
35. 35.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 8 PM
36. 36.🧩 Saanvi is 12 years old. Tara is 3 years older than Saanvi. How old is Tara? (a) not enough info (b) 16 (c) 3 (d) 15
37. 37.🧩 Meera bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) ₹50 (c) ₹55 (d) not enough info
38. 38.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
39. 39.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) 4 PM (d) not enough info
40. 40.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 4 PM

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