Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 454 · 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.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
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
3. 3.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
4. 4.🧩 Diya bought 4 markers for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹240 (c) not enough info (d) ₹60
5. 5.🧩 A box has 4 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 13 (b) 45 (c) 36 (d) not enough info
6. 6.🧩 Diya bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) not enough info (c) ₹25 (d) ₹40
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
10. 10.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
12. 12.🧩 A box has 7 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 15 (c) 64 (d) 56
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, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
14. 14.🧩 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
15. 15.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
16. 16.🧩 Diya bought 5 markers and a cap for ₹265 in all. Each marker cost the same. What did one marker cost? (a) ₹53 (b) ₹265 (c) ₹260 (d) not enough info
17. 17.🧩 Saanvi is 10 years old. Kabir is 9 years older than Saanvi. How old is Kabir? (a) 20 (b) 9 (c) not enough info (d) 19
18. 18.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
19. 19.🧩 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
20. 20.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
21. 21.🧩 A box has 5 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 25 (d) 30
22. 22.🧩 Meera bought 6 markers for ₹360 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹360 (c) not enough info (d) ₹65
23. 23.🧩 Arjun bought 2 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) ₹60 (c) ₹65 (d) not enough info
24. 24.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Vihaan is 11 years old. Meera is 5 years older than Vihaan. How old is Meera? (a) 17 (b) not enough info (c) 5 (d) 16
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
27. 27.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
29. 29.🧩 Meera is 6 years old. Diya is 8 years older than Meera. How old is Diya? (a) 14 (b) 15 (c) 8 (d) not enough info
30. 30.🧩 A box has 3 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 36 (b) 12 (c) 27 (d) not enough info
31. 31.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
32. 32.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 18 (b) 9 (c) not enough info (d) 90
33. 33.🧩 Tara bought 6 pens and a cap for ₹390 in all. Each pen cost the same. What did one pen cost? (a) ₹65 (b) ₹384 (c) not enough info (d) ₹390
34. 34.🧩 Meera is 10 years old. Ananya is 6 years older than Meera. How old is Ananya? (a) 16 (b) 6 (c) 17 (d) not enough info
35. 35.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM
36. 36.🧩 Nisha is 10 years old. Ananya is 3 years older than Nisha. How old is Ananya? (a) 14 (b) 3 (c) 13 (d) not enough info
37. 37.🧩 Rohan bought 5 balls for ₹250 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹50 (c) ₹250 (d) not enough info
38. 38.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
39. 39.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
40. 40.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 40 (c) 8 (d) 4

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