1.-3.288*(-9)-(-3.772)*9+(-1.5)*9 2.(99+15/16)*(-8)
问题描述:
1.-3.288*(-9)-(-3.772)*9+(-1.5)*9 2.(99+15/16)*(-8)
用简便计算计算
答
1.-3.288*(-9)-(-3.772)*9+(-1.5)*9
=9*(3.288+3.772-1.5)
=9*5.56
=55.6-5.56
=50.04
2.(99+15/16)*(-8)
=(100-1/16)*(-8)
=-800+1/2
=-799又1/2