Question 1: Round 4,567,891,234 to the nearest 1000.

Answer: 4,567,891,000

Question 2: Round 987,654,321,987 to the nearest 1000.

Answer: 987,654,322,000

Question 3: Calculate the difference between 1,234,567,890 and its rounded value to the nearest 1000.

Answer: 890

Question 4: Estimate 7,654,321,098,765 rounded to the nearest 1000.

Answer: 7,654,321,099,000

Question 5: Construct a large number greater than 1,000,000,000,000 that rounds to 1,000,000,000,000 when rounded to the nearest 1000.

Answer: Any number between 999,999,500,000 and 1,000,000,499,999

Question 6: A company's revenue is 2,345,678,901,234. Round this to the nearest 1000 for a financial report.

Answer: 2,345,678,901,000

Question 7: Plot the graph of y = 2x for x from 0 to 5 on the grid.

Answer: Points (0,0), (1,2), (2,4), (3,6), (4,8), (5,10)

Question 8: Construct a triangle with vertices at (0,0), (500,0), and (0,500) on the grid. Describe its approximate size after construction.

Answer: A right-angled triangle with legs of about 500 units each.

Question 9: Round 12,345,678,901,234 to the nearest 1000.

Answer: 12,345,678,901,000

Question 10: Identify and correct the mistake: Rounding 5,678,901,234,567 to the nearest 1000 gives 5,678,900,000,000.

Answer: Incorrect; correct rounding is 5,678,901,235,000

Question 11: Find the rounded value of 999,999,999,999 to the nearest 1000.

Answer: 1,000,000,000,000