Jim's Math Corner by James W. Leonardi
Division Home Division Home Whole Numbers Decimals Fractions	PLACE VALUE NAMES This will help us learn how write a number in the word form. The free download below will also help us learn to write the word form in numerical form. This page also teaches us how to expand a number. This gives us a better understanding of the make up of a number. PLACE VALUE NAMES   LLLLLLLLLLLLLllllllllllllllllLLLby James W. Leonardi   1                             0 1                           0 0 1                         0 0 0 1                       0 0 0 0 1                     0 0 0 0 0 1     1 1 1 1 1 1   0 0 0 0 0 0 1 . 10 100 1000 10000 100000 1000000   106 105 104 103 102 101 100   10-1 10-2 10-3 10-4 10-5 10-6   M H T T H T O D T H T T H M   i u e h u e n E e u h e u i   l n n o n n e C n n o n n l   l d   u d     I t d u   d l   i r T s r     M h r s T r i   o e h a e     A   e a h e o   n d o n d     L   d n o d n       u d           t d u   t     T s             h t s T h     h a               h a h       o n                 n o       u d                 d u       s                   t s       a                   h a       n                     n       d                     d                             t                             h     Our Example (numerical to words):       7, 9 0 3, 4 2 5 . 9 0 4 6 8 3   7, 9 0 3, 4 2 5 . 9 0 4 6 8 3 Numerical Form Seven million, Written Form Write only the numbers under the columns that has a thousand in its name (green column numbers), then add the word thousand after it as shown below. 7, 9 0 3, 4 2 5 . 9 0 4 6 8 3 Numerical Form Seven million, nine hundred three thousand, Written Form   CAUTION: Do NOT read nine hundred AND three.   Read the next three columns --- labeled hundred twenty-one. 7, 9 0 3, 4 2 5 . 9 0 4 6 8 3 Numerical Form Seven million, nine hundred three thousand, four hundred twenty-five Written Form   CAUTION: Do NOT read four hundred AND twenty-five.   For the decimal we say the word "and". 7, 9 0 3, 4 2 5 . 9 0 4 6 8 3 Numerical Form Seven million, nine hundred three thousand, four hundred twenty-five and Written Form   For those digits following the decimal, read the number as if the decimal was not there --- nine hundred four thousand, six hundred eighty-three. Since the last digit (3) is in the millionth column, add the word millionth after it. Write as shown below. llllll nine hundred four thousand, six hundred eighty-three millionth. Let's write the number without the coloring as shown below. lllllllllSeven million, nine hundred three thousand, four hundred twenty-five and nine hundred four thousand, six hundred eighty-three. Expanding Our Number The number of zeros is equal to the exponent. Our example shall be the number above: 7,903,425.904683 7 x 106 = 7, 0 0 0, 0 0 0               7 followed by 6 zeros + 9 x 105 =   9 0 0, 0 0 0               9 followed by 5 zeros + 0 x 104 =     0 0, 0 0 0               equal to zero + 3 x 103 =       3, 0 0 0               3 followed by 3 zeros + 4 x 102 =         4 0 0               4 followed by 2 zeros + 2 x 101 =           1 0               2 followed by 1 zero + 5 x 100 =             5               5 followed by no zeros + 9 x 10-1 =             0. 9             no zeros between 9 and decimal  + 0 x 10-2 =             0. 0 0           equal to zero  + 4 x 10-3 =             0. 0 0 4         2 zeros between 4 and decimal +  6 x 10-4 =             0. 0 0 0 6       3 zeros between 6 and decimal  + 8 x 10-5 =             0. 0 0 0 0 8     4 zeros between 8 and decimal  + 3 x 10-6 =           + 0. 0 0 0 0 0 3   5 zeros between 3 and decimal +          7, 9 0 3, 4 2 5. 9 0 4 6 8 3   Sum equals our original number   l This should help those who just needed a review or a jump start for the "A" student. If you are like most of us, you will need a more in-depth study and more examples. I have kept the price down so everyone who needs help can afford it. For more in-depth FREE help download this file (in word 97 format).