Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 202 · 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 of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
2. 2.🧩 Ananya is 8 years old. Nisha is 2 years older than Ananya. How old is Nisha? (a) not enough info (b) 2 (c) 10 (d) 11
3. 3.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
5. 5.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 10 (b) 28 (c) 24 (d) not enough info
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
7. 7.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 3 PM (d) 6 PM
8. 8.🧩 Nisha bought 6 kites and a lunch box for ₹350 in all. Each kite cost the same. What did one kite cost? (a) ₹350 (b) ₹344 (c) ₹58 (d) not enough info
9. 9.🧩 Arjun bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) ₹275 (b) ₹55 (c) not enough info (d) ₹60
10. 10.🧩 Rohan bought 4 mangoes and a water bottle for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹240 (c) not enough info (d) ₹236
11. 11.🧩 Nisha is 9 years old. Diya is 9 years older than Nisha. How old is Diya? (a) not enough info (b) 9 (c) 18 (d) 19
12. 12.🧩 Nisha bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹65 (d) ₹60
13. 13.🧩 Meera is 10 years old. Tara is older than Meera. How old is Tara? (a) 15 (b) 12 (c) 11 (d) not enough info
14. 14.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
15. 15.🧩 Diya is 11 years old. Arjun is 4 years older than Diya. How old is Arjun? (a) 4 (b) 16 (c) 15 (d) not enough info
16. 16.🧩 Meera bought 5 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹35 (c) not enough info (d) ₹150
17. 17.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
18. 18.🥭 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
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Meera bought 2 notebooks and a water bottle for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) ₹128 (c) not enough info (d) ₹130
21. 21.🧩 Tara is 6 years old. Diya is 4 years older than Tara. How old is Diya? (a) not enough info (b) 4 (c) 11 (d) 10
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Diya bought 5 pens and a bag for ₹230 in all. Each pen cost the same. What did one pen cost? (a) ₹46 (b) ₹225 (c) ₹230 (d) not enough info
24. 24.🧩 A box has 3 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 24 (b) not enough info (c) 32 (d) 11
25. 25.🧩 Diya is 8 years old. Saanvi is 8 years older than Diya. How old is Saanvi? (a) not enough info (b) 16 (c) 8 (d) 17
26. 26.🧩 Diya bought 5 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) not enough info (c) ₹50 (d) ₹10
27. 27.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Nisha is 7 years old. Ishaan is older than Nisha. How old is Ishaan? (a) 8 (b) 9 (c) not enough info (d) 12
29. 29.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
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.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
33. 33.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 4 PM
34. 34.🧩 Rohan is 10 years old. Diya is 9 years older than Rohan. How old is Diya? (a) not enough info (b) 9 (c) 19 (d) 20
35. 35.🧩 Kabir is 6 years old. Tara is 3 years older than Kabir. How old is Tara? (a) 3 (b) not enough info (c) 10 (d) 9
36. 36.🧩 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
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
38. 38.🧩 Meera bought 5 notebooks and a cap for ₹165 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹33 (c) ₹160 (d) ₹165
39. 39.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
40. 40.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

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