1. The problem asks to write the number "Two thousand, six hundred and twenty" in expanding notation. 2. Expanding notation means expressing the number as the sum of each digit multiplied by its place value. 3. First, write the number in digits: 2620. 4. Break down each digit by its place value: - The digit 2 is in the thousands place, so it represents $2 \times 1000$. - The digit 6 is in the hundreds place, so it represents $6 \times 100$. - The digit 2 is in the tens place, so it represents $2 \times 10$. - The digit 0 is in the ones place, so it represents $0 \times 1$. 5. Write the full expanded form: $$2620 = 2 \times 1000 + 6 \times 100 + 2 \times 10 + 0 \times 1$$ 6. This is the expanded notation of the number two thousand, six hundred and twenty.