What sign do you assign to the numbers on left to zero on number line?

Positive integers are greater than zero.

Descending means decreasing.

Predecessor is just one unit to the left of a number and successor is just one unit to the right of a number.

How do you define decimals?

Negative integers are smaller than zero.

Think which number lies on the right and which lies on the left on number line.

Draw a number line and visualize the positions of the numbers in the pairs.

Think about the position of negative numbers on a number line.