61.3*0.15+15*1.387=
1个回答
61.3*0.15+15*1.387
=61.3÷100×0.15×100+15×1.387
=0.613×15+15×1.387
=15×(0.613+1.387)
=15×2
=30
相关问题
(3.15+2.17+5.61)×(2.17+5.61+6.6)-(3.15+2.17+
(3.15+2.17+5.61)*(2.17+5.61+6.6)—(3.15+2.17+5.61+6.6)*(2.17+
找规律:1 -1 7 -15 31 -61 ( ) ( )
1、4.26-0.15-0.15-0.15-0.15
15.61/51.615+58156.81851
请问下列的数字有什么规律吗?RT:1,3,15,61
15,27,59,____,10395,88,71,61,50,____4/9,1,1,1/3,____,12,3656
0.387*76000-387*66+84*387+38.7*60简便计算
15+(-1/4)-15-(-0.25) 8-2×3 3-(-0.25)
15*(-0.25)+15*1.13-0.12*(-15)=?