(-2)²-(-5²)x(-1)^5+87/(-3)x(-1)^4
=4-(-25)×(-1)+87÷(-3)×1
=4-25-29
=-50
1^4-(0.5-2/3)/(1/3)x【-2-(-3)³ 】-1/8-|0.5²|
=1-(-1/6)×3×(-2+27)-(1/8)-0.25
=1-(-1/6)×3×25-(1/8)-0.25
=1+(25/2)-(1/8)-0.25
=125/8
-3²x1.2²/0.3²+(-1/3)²x(-3)³ /(-1)^2009
=-9×1.44÷0.09+(1/9)×(-27)÷(-1)
=-144+3
=-141
(-2)平方-(-5平方)乘(-1)5次方+87除以(-3)乘(-1)4次方
=4-(-25)×(-1)+87÷(-3)×1
=4-25-29
=-50
1的4次方-(0.5-3分之2)除以3分之1乘【-2-(-3)的3次方】-8分之1-0.5平方的绝对值
=1-(-1/6)×3×(-2+27)-(1/8)-0.25
=1-(-1/6)×3×25-(1/8)-0.25
=1+(25/2)-(1/8)-0.25
=125/8
-3的二次方乘1.2二次方除以0.3二次方+(-3分之1)二次方乘(-3)3次方除以(-1)2009次方
=-9×1.44÷0.09+(1/9)×(-27)÷(-1)
=-144+3
=-141
(1)原式=4-25×﹙-1﹚+87÷﹙-3﹚
=29-29
=0
﹙2﹚原式=|1-﹙-1/6﹚÷1/3×[-2-﹙-27﹚-1/8-1/4|
=|1+1/2×[25-3/8]|
=|1+1/2×24.625|
=13.3125 这题好像有点乱
﹙3 ﹚原式=9×1.44÷0.09+1/9×27
=144+3
=147