6*1.6+28.8*36.8-14.4*80
1个回答
6*1.6+28.8*36.8-14.4*80
=6*1.6+28.8*36.8-28.8*40
=6*1.6-28.8*3.2
=3*3.2-28.8*3.2
=-3.2*25.8
=-82.56
相关问题
用简便方法计算:57.6×1.6+28.8×36.8-14.4×80.
用简便方法计算:57.6×1.6+28.8×36.8-14.4×80.
用简便方法计算:57.6×1.6+28.8×36.8-14.4×80.
1-2+3-4+...-14+15/-2+4-6+8-...+28-30
[1−2+3−4+…−14+15/−2+4−6+8−…+28−30]=______.
-3.14*35.2+6.28*(-23.6)-1.57*36.4
简便运算36*1.28+8.2*3.6-3.6
计算:-3.14×35.2+6.28×(-23.2)-1.57×36.8.
问:1-2+3-4+……-14+15/-2+4-6+8……+28-30=?
1=4 2=8 3=16 4=28 5=36 6=44 7=106 8=?大神赐教