6 — Practice Exercises
Practice Exercises
Solution & Explanation · ID: CB431D57
Question
Write 3,405,672 in expanded form.
Hint
Start with the millions place and work your way to the ones place.
Concept
Expanded form shows the value of each digit based on its place value position in a number.
Show Answer
3,000,000 + 400,000 + 5,000 + 600 + 70 + 2
Show Solution
1
Identify the place value of each digit in 3,405,672
2
Write each digit multiplied by its place value: 3 × 1,000,000 = 3,000,000
3
Continue for each digit: 4 × 100,000 = 400,000
4
0 × 10,000 = 0 (we don't write zero terms)
5
5 × 1,000 = 5,000
6
6 × 100 = 600
7
7 × 10 = 70
8
2 × 1 = 2
9
Write the sum: 3,000,000 + 400,000 + 5,000 + 600 + 70 + 2