Question

2.2X54+4.6x2.2+100*1.8用简便计算

Answer 1

2.2×54+4.6×2.2+100×1.8
=2.2×(54+4.6)+180
=(2+0.2)×58.6+180
=2×58.6+0.2×58.6+180
=117.2+11.72+180
=128.92+180
=120+180+8.92
=300+8.92
=308.92

Answer 2

2.2x54+46x2.2+100x1.8
=2.2x(54+46)+100x1.8
=2.2x100+1.8x100
=(2.2+1.8)x100
=400

Answer 3

=22*5.4+22*4.6+100*1.8
=22（5.4+4.6）+100*1.8
=22*10+100*1.8
=220+180
=400

Answer 4

中间应该是46x22吧。。。
2.2x54+46x2.2+100x1.8
=2.2x(54+46)+100x1.8
=2.2x100+100x1.8
=100x(2.2+1.8)
=100x4
=400

Answer 5

原式=（5.4+4.6）*2.2+100*1.8=22+180=202

Answer 6

不得不说感觉像出错题了，可能是54+46