(32+4)乘125 巧算

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(32+4)乘125 巧算
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(32+4)乘125 巧算
(32+4)乘125 巧算

(32+4)乘125 巧算
(32+4)x125
=4x(8x125)+4x125
=4000+500
=4500

=4*125*9=4500(36=4*9)

4500

(32+4)X125
=(40-4)X(100+25)
=40X100+40X25-4X100-4X25
=4000+1000-400-100
=5000-500
=4500