Khan Academy: Arithmetic and Pre Algebra: Multiplication 6: Multiple Digit

A video showing more examples of multiplication with multi-digit numbers. [6:18]

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]

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 find the least common multiple of three numbers using lists of multiples or prime factorization. Practice problems are available. [5:23]

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

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

This video explains how to find the reciprocal of a mixed number. [1:41]