Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 269 · 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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
2. 2.🧩 Diya is 9 years old. Nisha is 6 years older than Diya. How old is Nisha? (a) 6 (b) not enough info (c) 16 (d) 15
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Ishaan bought 6 mangoes and a bag for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹28 (b) not enough info (c) ₹164 (d) ₹170
5. 5.🧩 Arjun bought 3 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹90
6. 6.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
7. 7.🧩 Arjun is 11 years old. Saanvi is 6 years older than Arjun. How old is Saanvi? (a) not enough info (b) 6 (c) 18 (d) 17
8. 8.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, it is certain (d) yes, mangoes match
9. 9.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
12. 12.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
13. 13.🧩 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
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
15. 15.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
16. 16.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
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
18. 18.🧩 Kabir is 9 years old. Ishaan is 2 years older than Kabir. How old is Ishaan? (a) 2 (b) 12 (c) 11 (d) not enough info
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
20. 20.📊 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
21. 21.🧩 Arjun is 7 years old. Meera is older than Arjun. How old is Meera? (a) 9 (b) not enough info (c) 12 (d) 8
22. 22.🧩 Meera is 8 years old. Tara is 7 years older than Meera. How old is Tara? (a) 15 (b) 7 (c) 16 (d) not enough info
23. 23.🧩 Aarav is 7 years old. Vihaan is older than Aarav. How old is Vihaan? (a) 8 (b) 9 (c) 12 (d) not enough info
24. 24.🧩 Vihaan bought 3 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹75 (c) ₹30 (d) not enough info
25. 25.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
26. 26.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
27. 27.🧩 Kabir is 6 years old. Arjun is older than Kabir. How old is Arjun? (a) 11 (b) not enough info (c) 8 (d) 7
28. 28.🧩 A box has 3 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 7 (b) 12 (c) not enough info (d) 16
29. 29.🧩 Tara bought 2 notebooks and a lunch box for ₹70 in all. Each notebook cost the same. What did one notebook cost? (a) ₹70 (b) ₹68 (c) not enough info (d) ₹35
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
31. 31.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
32. 32.🧩 Meera bought 5 mangoes and a lunch box for ₹225 in all. Each mango cost the same. What did one mango cost? (a) ₹225 (b) not enough info (c) ₹220 (d) ₹45
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
34. 34.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
35. 35.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
36. 36.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
37. 37.🧩 Diya is 12 years old. Nisha is 8 years older than Diya. How old is Nisha? (a) not enough info (b) 8 (c) 21 (d) 20
38. 38.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 7 PM
39. 39.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 11 (b) 36 (c) 30 (d) not enough info
40. 40.🧩 Tara is 12 years old. Ananya is 7 years older than Tara. How old is Ananya? (a) 20 (b) 7 (c) not enough info (d) 19

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