Chapter 4 - Decimals - 4.1 Reading and Writing Decimal Numbers - 4.1 Exercises - Page 274: 74

$$ (a) \ 123,200 \\ (b) \ 503,420,000 \\ \ (c) \ 36,510,000,000$$

To write each number as a number without a decimal point, we need to identify the location of all of the digits. We know that 'thousand" is the 4th digit, "million" is the 7th digit, and that "billion" is the 10th digit. Thus: $$ (a) \ 123,200 \\ (b) \ 503,420,000 \\ \ (c) \ 36,510,000,000$$