0.9✖️56.2➕56.2➗10简便方法?
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解:0.9×56.2+56.2÷10等于( 281/5 ),【即等于56.2】
∵已知需求出0.9×56.2+56.2÷10等于多少
X × Y + X × Z = X × (Y + Z)
∴0.9 × 56.2 + 56.2 ÷ 10
= 0.9 × 56.2 + 56.2 × 1/10
= 56.2 × (0.9 + 1/10)
= (56×10+2)/10 × (9/10 + 1/10)
= 562/10 × 10/10
= 281/5 × 1
= 281/5
= 56.2
答:0.9×56.2+56.2÷10等于281/5,【即等于56.2】
∵已知需求出0.9×56.2+56.2÷10等于多少
X × Y + X × Z = X × (Y + Z)
∴0.9 × 56.2 + 56.2 ÷ 10
= 0.9 × 56.2 + 56.2 × 1/10
= 56.2 × (0.9 + 1/10)
= (56×10+2)/10 × (9/10 + 1/10)
= 562/10 × 10/10
= 281/5 × 1
= 281/5
= 56.2
答:0.9×56.2+56.2÷10等于281/5,【即等于56.2】
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0.9×56.2+56.2÷10
=0.9×56.2+56.2×0.1
=(0.9+0.1)×56.2
=1×56.2
=56.2
运用乘法分配律的逆运算
=0.9×56.2+56.2×0.1
=(0.9+0.1)×56.2
=1×56.2
=56.2
运用乘法分配律的逆运算
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0.9✖️56.2➕56.2➗10
=0.9x56.2+56.2x0.1
=56.2x(0.9+0.1)
=56.2x1
=56.2
=0.9x56.2+56.2x0.1
=56.2x(0.9+0.1)
=56.2x1
=56.2
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