12*125的简便运算

12*125的简便运算
12*125的简便运算

12*125的简便运算
12×125
=3×4×125
=3×500
=1500

12*125
=3*（4*125）
=3*500
=1500

10*125+2*125

=4*3*25*5
=(4*25)*(3*5)
=100*15
=1500

12x125
=（8+4）x125
=8x125+4x125
=1000+500
=1500

12*125=（3*4）*125=3*（4*125）=3*500=1500

将12拆成10和2 分别乘125后再相加
125*10+125*2=1250+250=1500