The number ?thirty-one million, six thousand, one hundred fifty? is equivalent to 30,000,000 + 1,000,000 + 6,000 + 100 + 50 in expanded form. In converting a number expressed in words to its corresponding expanded form, it is important to know what digit corresponds to each place value.
The expanded form of a number shows the value of each digit written in an addition statement. Three is in the ten millions? place; therefore, its value is equal to 3 x 10,000,000 or 30,000,000. The given number, which is written as 31,006,150 in standard or numeric form, has 3 ten millions, 1 million, 6 thousands, 1 hundred and 5 tens.