Write these decimal number in expanded notation

• 1 is in the hundreds place (10²)
• 2 is in the tens place (10¹)
• 3 is in the ones place (10⁰)
• 4 is in the tenths place (10⁻¹)
• 5 is in the hundredths place (10⁻²)
• 6 is in the thousandths place (10⁻³)

• 1 × 100
• 2 × 10
• 3 × 1
• 4 × (1/10) or 4 × 0.1
• 5 × (1/100) or 5 × 0.01
• 6 × (1/1000) or 6 × 0.001

123.456 = (1 × 100) + (2 × 10) + (3 × 1) + (4 × 0.1) + (5 × 0.01) + (6 × 0.001)

Alternatively, using powers of 10:
123.456 = (1 × 10²) + (2 × 10¹) + (3 × 10⁰) + (4 × 10⁻¹) + (5 × 10⁻²) + (6 × 10⁻³)

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