举一反三A版 第二周 疯狂操练三 例:36*1.09+1.2*67.3=1.2*30*1.09+1.2*67.3=1.2*(30*1.09+67.3)=1.2*(32.7+67.3)=1.2*100=120计算(简便计算,仿照例题,最好是准确答案)1.45*2.08+1.5*37.62.52*11.1+2.6*7783.48*1.08+1.2*56.
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举一反三A版 第二周 疯狂操练三 例:36*1.09+1.2*67.3=1.2*30*1.09+1.2*67.3=1.2*(30*1.09+67.3)=1.2*(32.7+67.3)=1.2*100=120计算(简便计算,仿照例题,最好是准确答案)1.45*2.08+1.5*37.62.52*11.1+2.6*7783.48*1.08+1.2*56.
举一反三A版 第二周 疯狂操练三
例:36*1.09+1.2*67.3=1.2*30*1.09+1.2*67.3=1.2*(30*1.09+67.3)=1.2*(32.7+67.3)=1.2*100=120
计算(简便计算,仿照例题,最好是准确答案)
1.45*2.08+1.5*37.6
2.52*11.1+2.6*778
3.48*1.08+1.2*56.8
4.72*2.09-1.8*73.6
举一反三A版 第二周 疯狂操练三 例:36*1.09+1.2*67.3=1.2*30*1.09+1.2*67.3=1.2*(30*1.09+67.3)=1.2*(32.7+67.3)=1.2*100=120计算(简便计算,仿照例题,最好是准确答案)1.45*2.08+1.5*37.62.52*11.1+2.6*7783.48*1.08+1.2*56.
1. 45*2.08+1.5*37.6
=30*1.5*2.08+1.5*37.6
=1.5*(30*2.08+37.6)
=1.5*100
=150
2. 52*11.1+2.6*778
=2.6*20*11.1+2.6*778
=2.6*(20*11.1+778)
=2.6*1000
=2600
3. 48*1.08+1.2*56.8
=40*1.2*1.08+1.2*56.8
=1.2*(40*1.08+56.8)
=1.2*100
=120
4. 72*2.09-1.8*73.6
=1.8*40*2.09-1.8*73.6
=1.8*(40*2.09-73.6)
=1.8*10
=18