(0 x 1) . (1/10) + (2/100) + (3/1000) + (4/10000)
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1000+200+70+1
4+0.6 Four and six tenths
Expanded form shows a number expanded into an addition statement. e.g. 235 = 200 + 30 + 5 e.g. 4.97 = 4 + 0.9 + 0.07 Also when you have a square it will look like Example: 3X1+3X9=30
1.25 = (1 x 1) . (2/10) + (5/100)
162 = 256256 in expanded notation is: (2 x 100) + (5 x 10) + (6 x 1)