5.5X17.3一5.5十7.7X5.5用简便方法怎么做?
发布网友
发布时间:2022-12-03 03:53
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热心网友
时间:2023-12-06 07:40
方法如下:
5.5X17.3一5.5十7.7X5.5
=5.5*(17.3+7.7-1)
=5.5*24
=132
热心网友
时间:2023-12-06 07:41
5.5X17.3一5.5十7.7X5.5
=5.5x(17.3-1+7.7)
=5.5x24
=132
热心网友
时间:2023-12-06 07:41
简便方法如下:
5.5x17.3-5.5+7.7x5.5
=5.5x(17.3-1+7.7)
=5.5x24
=132
热心网友
时间:2023-12-06 07:42
原式=5.5×(17.3-1+7.7)
=5.5×24
=132
热心网友
时间:2023-12-06 07:43
解:5.5X17.3一5.5十7.7X5.5等于( 132 )
∵已知需求出5.5X17.3一5.5十7.7X5.5等于多少
X × Y + X × Z = X × (Y + Z)
∴5.5 X 17.3 一 5.5 十 7.7 X 5.5
= 5.5 × (17.3 - 1 + 7.7)
= (5×10+5)/10 × (17.3 + 7.7 - 1)
= 55/10 × (25 - 1)
= 11/2 × 24
= 132
答:5.5X17.3一5.5十7.7X5.5等于132