Khan Academy: Arithmetic and Pre Algebra: Reciprocal of a Mixed Number

This video shows how to write an improper fraction as a mixed number using drawings. Practice problems are available. [4:01]

A video covering a review of subtraction using a number line, followed by subtraction of numbers up to three-digits by using borrowing and regrouping. Practice problems available. [18:26]

This video shows how to round a five-digit number to the nearest hundred using a number line. Practice problems are available. [4:23]

This video shows how to round a 4-digit number to the nearest ten. Practice problems are available. [1:04]

This video shows how to locate and plot a decimal number on a number line. Practice problems are available. [1:39]

This video expains how to divide two mixed numbers and write the answer as a mixed number. Practice problems are available. [2:40]

This video shows how to write a mixed number as an improper fraction. Practice problems are available. [4:26]

This video shows several examples of addition with up to four-digit numbers. Practice problems are available. [8:57]

This video shows subtraction of two-digit numbers and place value to tens. [2:54]

This video shows how to solve a subtraction word problem using borrowing or regrouping. Practice problems are available. [5:09]