Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 302 · 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.🧩 Ishaan bought 2 pens and a water bottle for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) not enough info (c) ₹60 (d) ₹118
2. 2.🧩 A box has 5 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 10 (c) 25 (d) 30
3. 3.🧩 Meera is 6 years old. Saanvi is older than Meera. How old is Saanvi? (a) 7 (b) not enough info (c) 8 (d) 11
4. 4.🧩 Vihaan is 7 years old. Nisha is 5 years older than Vihaan. How old is Nisha? (a) 5 (b) 13 (c) not enough info (d) 12
5. 5.🧩 Vihaan bought 3 markers for ₹135 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) not enough info (c) ₹135 (d) ₹45
6. 6.🧩 Aarav bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) not enough info (c) ₹55 (d) ₹275
7. 7.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
8. 8.🧩 Rohan is 6 years old. Ananya is 9 years older than Rohan. How old is Ananya? (a) not enough info (b) 15 (c) 16 (d) 9
9. 9.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 90 (b) 18 (c) not enough info (d) 9
10. 10.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 4 PM
11. 11.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
13. 13.🧩 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
14. 14.🧩 Diya is 6 years old. Kabir is 3 years older than Diya. How old is Kabir? (a) not enough info (b) 3 (c) 10 (d) 9
15. 15.🧩 Aarav is 9 years old. Ananya is 5 years older than Aarav. How old is Ananya? (a) 5 (b) 14 (c) 15 (d) not enough info
16. 16.🧩 Vihaan bought 5 mangoes and a cap for ₹345 in all. Each mango cost the same. What did one mango cost? (a) ₹340 (b) ₹69 (c) ₹345 (d) not enough info
17. 17.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
18. 18.🧩 Diya bought 4 kites and a cap for ₹190 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹47 (c) ₹190 (d) ₹186
19. 19.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
20. 20.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
21. 21.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
22. 22.🧩 A box has 6 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) not enough info (b) 63 (c) 15 (d) 54
23. 23.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
24. 24.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
25. 25.🧩 Ananya is 12 years old. Ishaan is older than Ananya. How old is Ishaan? (a) 17 (b) 14 (c) not enough info (d) 13
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
27. 27.🧩 Arjun bought 6 notebooks and a lunch box for ₹340 in all. Each notebook cost the same. What did one notebook cost? (a) ₹340 (b) ₹334 (c) not enough info (d) ₹56
28. 28.🧩 Arjun is 9 years old. Meera is older than Arjun. How old is Meera? (a) 14 (b) 11 (c) not enough info (d) 10
29. 29.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 36 (b) 45 (c) not enough info (d) 13
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
32. 32.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
33. 33.🧩 Diya is 9 years old. Meera is 8 years older than Diya. How old is Meera? (a) 18 (b) 8 (c) 17 (d) not enough info
34. 34.🧩 Vihaan bought 5 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹100 (c) ₹20 (d) ₹25
35. 35.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
36. 36.🧩 Kabir is 10 years old. Diya is 5 years older than Kabir. How old is Diya? (a) 15 (b) 16 (c) 5 (d) not enough info
37. 37.🧩 Vihaan bought 3 kites and a cap for ₹175 in all. Each kite cost the same. What did one kite cost? (a) ₹175 (b) ₹172 (c) ₹58 (d) not enough info
38. 38.🧩 Kabir is 6 years old. Tara is older than Kabir. How old is Tara? (a) 11 (b) 7 (c) 8 (d) not enough info
39. 39.🧩 Ishaan is 6 years old. Meera is older than Ishaan. How old is Meera? (a) 11 (b) not enough info (c) 7 (d) 8
40. 40.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info

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