I suspect the answer is 20000 but the wording of the question makes it is difficult to be sure.
When rounding 5555 to 2 significant figures, we start counting from the leftmost non-zero digit. In this case, the leftmost non-zero digit is 5. The next digit after 5 is 5, which is greater than or equal to 5, so we round up the leftmost non-zero digit. Therefore, 5555 rounded to 2 significant figures is 5600.
600 same as rounding to 1 significant figure
No, 6. You count from the first non-zero digit to the last non-zero digit. Zeros between non-zero digits are counted.
When rounding to 1 significant figure, we look at the first non-zero digit from the left. In this case, the first non-zero digit is 6. Since the digit immediately following it is less than 5, we round down. Therefore, 0.006772 rounded to 1 significant figure is 0.006.
129,000
Round it to the nearest thousand, which is 7,000 .
Round to whatever non-zero digit is farthest to the left.
It is 5000000.
Round it to the nearest ten thousands: 90000
Round to the nearest million and get 6 000 000
I suspect the answer is 20000 but the wording of the question makes it is difficult to be sure.
When rounding 5555 to 2 significant figures, we start counting from the leftmost non-zero digit. In this case, the leftmost non-zero digit is 5. The next digit after 5 is 5, which is greater than or equal to 5, so we round up the leftmost non-zero digit. Therefore, 5555 rounded to 2 significant figures is 5600.
600 same as rounding to 1 significant figure
4 Every digit between the leftmost non-zero digit and EITHER the right most non-zero digit OR the rightmost digit after a decimal.
No, 6. You count from the first non-zero digit to the last non-zero digit. Zeros between non-zero digits are counted.
To correct to 4 significant figures, you need to round the number to have four digits starting with the first non-zero digit from the left. If the fifth digit is 5 or more, round up the last remaining digit. If it's less than 5, keep the digit as it is.