These are both correct:
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In expanded form 5.68 is 5 + 0.6 + 0.08
100+50
The decimal 1.8 in expanded form is (1 x 1) + (8/10). The expanded word form is one and eight tenths.
It is 80000000 + 3000000.
0.068 in expanded form is (0 x 1) + (0/10) + (6/100) + (8/1000)