数学简算题4道一.45*2.08+1.5*37.6二.52*11.1+2.6*778三.48*1.08+1.2*56.8
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数学简算题4道
一.45*2.08+1.5*37.6
二.52*11.1+2.6*778
三.48*1.08+1.2*56.8
四.72*2.09-1.8*73.6
一.45*2.08+1.5*37.6
二.52*11.1+2.6*778
三.48*1.08+1.2*56.8
四.72*2.09-1.8*73.6
一.45*2.08+1.5*37.6
=1.5*62.4+1.5*37.6
=1.5*(62.4+37.6)
=1.5*100
=150
二.52*11.1+2.6*778
=2.6*222+2.6*778
=2.6*(222+778)
=2.6*1000
=2600
三.48*1.08+1.2*56.8
=1.2*43.2+1.2*56.8
=1.2*(43.2+56.8)
=1.2*100
=120
四.72*2.09-1.8*73.6
=1.8*83.6-1.8*73.6
=1.8*(83.6-73.6)
=1.8*10
=18
=1.5*62.4+1.5*37.6
=1.5*(62.4+37.6)
=1.5*100
=150
二.52*11.1+2.6*778
=2.6*222+2.6*778
=2.6*(222+778)
=2.6*1000
=2600
三.48*1.08+1.2*56.8
=1.2*43.2+1.2*56.8
=1.2*(43.2+56.8)
=1.2*100
=120
四.72*2.09-1.8*73.6
=1.8*83.6-1.8*73.6
=1.8*(83.6-73.6)
=1.8*10
=18
数学简算题4道一.45*2.08+1.5*37.6二.52*11.1+2.6*778三.48*1.08+1.2*56.8
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