3.678里有多少个0 ·001?
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解:3.678里有( 3678 )个0 ·001
∵已知需求出3.678里有多少个0.001
1个0.001 = 1 × 0.001 = 0.001
2个0.001= 0.001 + 0.001 = 2 × 0.001 = 0.002
∴设3.678里有x个0 ·001
x × 0.001 = 3.678
(1/1000)x = (3×1000+678)/1000
(1/1000)x = 3678/1000
x = 3678/1000 ÷ 1/1000
x = 3678/1000 × 1000
∴x = 3678
答:3.678里有3678个0 ·001
∵已知需求出3.678里有多少个0.001
1个0.001 = 1 × 0.001 = 0.001
2个0.001= 0.001 + 0.001 = 2 × 0.001 = 0.002
∴设3.678里有x个0 ·001
x × 0.001 = 3.678
(1/1000)x = (3×1000+678)/1000
(1/1000)x = 3678/1000
x = 3678/1000 ÷ 1/1000
x = 3678/1000 × 1000
∴x = 3678
答:3.678里有3678个0 ·001
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