99 9.9 0.99 999 99.9 9.99 0.999 9,999 999.9 99.99 9.999 99,999 9,999.9 999.99 99.999 999,999 99,999.9 9999.99 999.999
2 hundreds, 3 tens and 4 ones 2 x 100 + 3 x 10 + 4 + 4 x 0.01 2 x 100 + 3 x 10 + 4 + 4 * 1/10 2 x 102 + 3 x 101 + 4 x 10-1 200 + 30 + 4 + 0.4
Expanded Form Standard Form
Allow 0 to be used as a digit.