Question
Write the following numbers in the expanded forms.
120719
120719
✓
Answer
Expanded form of 120719
$=1 \times 100000+2 \times 10000+0 \times 1000+7$ $\times 100+1 \times 10+9 \times 1$
$=1 \times 10^5+2 \times 10^4+0 \times 10^3+7 \times 10^2+1 \times 10^1$ $+9 \times 10^0 \quad\left[\because 10^0=1\right]$
$=1 \times 100000+2 \times 10000+0 \times 1000+7$ $\times 100+1 \times 10+9 \times 1$
$=1 \times 10^5+2 \times 10^4+0 \times 10^3+7 \times 10^2+1 \times 10^1$ $+9 \times 10^0 \quad\left[\because 10^0=1\right]$
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