Question 1: Round 1,245,678 to the nearest 100.

Answer: 1,245,700

Question 2: Round 987,654 to the nearest 100.

Answer: 987,700

Question 3: Calculate the value of 123,456 rounded to the nearest 100.

Answer: 123,500

Question 4: What is 546,789 rounded to the nearest 100?

Answer: 546,800

Question 5: Estimate the total of 2,345,678 and 4,567,890 by rounding each to the nearest 100.

Answer: 2,345,700 + 4,567,900 = 6,913,600

Question 6: A population of 3,876,543 is rounded to the nearest 100. What is the rounded number?

Answer: 3,876,500

Question 7: Construct a triangle with side lengths approximately 1,245,300; 1,245,400; and 1,245,500. Use the grid to draw the triangle.

Answer: Student's drawing

Question 8: A factory produces 9,876,543 units of a product annually. Round this number to the nearest 100.

Answer: 9,876,500

Question 9: Identify and correct the mistake: Rounding 1,234,567 to the nearest 100 gives 1,234,600.

Answer: Incorrect; 1,234,567 rounds to 1,234,600 as the last two digits are 67, which rounds up, so the answer is correct. (Trick question)

Question 10: Estimate the total of 7,654,321 and 8,765,432 by rounding each to the nearest 100.

Answer: 7,654,300 + 8,765,400 = 16,419,700

Question 11: Round 2,345,678 to the nearest 100 and explain your reasoning.

Answer: 2,345,700 because the last two digits, 78, are 78, which rounds up the hundred's digit.