Ordering decimals: To order decimals, you can compare the digits from left to right. Start with the whole number part and then move to the decimal part. If the whole number parts are different, the decimal with the larger whole number part is greater. If the whole number parts are the same, compare the decimal parts digit by digit from left to right until you find a difference. The decimal with the larger digit in that position is greater.

For example, to order the decimals 0.25, 0.3, and 0.15: 0.25 < 0.3 < 0.15

Comparing decimals: To compare decimals, you can use the same method as ordering decimals. Compare the digits from left to right, starting with the whole number part and then moving to the decimal part. The decimal with the larger digit in the leftmost position is greater. If the digits are the same, move to the next position until you find a difference.

For example, to compare the decimals 0.75 and 0.8: 0.75 < 0.8

Fractions on a number line: To represent fractions on a number line, divide the number line into equal parts based on the denominator of the fraction. For example, if you have the fraction 1/4, divide the number line into 4 equal parts. Then, locate the numerator on the number line. In this case, the numerator is 1, so you would locate the point 1/4 of the way between 0 and 1.

For example, to represent the fraction 3/5 on a number line: Divide the number line into 5 equal parts and locate the point 3/5 of the way between 0 and 1.

Remember to label the number line with the appropriate fractions or decimals to accurately represent the values.