This is a 3 worksheet combo, which means you save over the cost of buying the worksheets individually. It contains all three of the Giant and Tiny Numbers worksheets. Here is their description: This worksheet is about dealing with extreme numbers in verbal, scientific, and standard form. For example: part I: write 5.6 million as a number. Part II: convert 2.74 billion to scientific notation. Part III: convert from scientific notation to standard notation. Part IV: fix 45.2x10^3 into proper scientific notation.