数学四道计算题,都要有具体的计算过程,最好写下来,谢谢,急急急!!
4个回答
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(-2.5²)×(-4)
=-6.25×(-4)
=25
13.5×(-2/3)²÷2.7÷(-2又7/9)
=13.5×4/9÷2.7÷(-25/9)
=6÷2.7÷(-25/9)
=20/9×(-9/25)
=-4/5
-3又1/3×2又1/5÷(-1又1/2)
=-10/3×11/5÷(-3/2)
=-22/3×(-2/3)
=44/9
-5.7÷(-3又1/6)×(-6)
=-5.7÷(-19/6)×(-6)
=1.8×(-6)
=-10.8
=-6.25×(-4)
=25
13.5×(-2/3)²÷2.7÷(-2又7/9)
=13.5×4/9÷2.7÷(-25/9)
=6÷2.7÷(-25/9)
=20/9×(-9/25)
=-4/5
-3又1/3×2又1/5÷(-1又1/2)
=-10/3×11/5÷(-3/2)
=-22/3×(-2/3)
=44/9
-5.7÷(-3又1/6)×(-6)
=-5.7÷(-19/6)×(-6)
=1.8×(-6)
=-10.8
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