第70页

信息发布者：
=37-37×0.728-37×0.172
=37×(1-0.728-0.172)
=37×0.1
=3.7
=28×2.34+28×6.54+11.1×57.6
=28×8.88+11.1×57.6
=224×1.11+576×1.11
=(224+576)×1.11
=888
原式=(20.2441×10000−20.2441)÷(40.4882× 10000−40.4882)
=(20.2441×9999)÷(40.4882×9999)
=20.2441÷40.4882
=0.5 
41.2×8.1+1.1×12.5+53.7×1.9 =41.2×8.1+1.1×12.5+(41.2+12.5)×1.9 =41.2×8.1+1.1×12.5+41.2×1.9+12.5×1.9 =41.2×8.1+41.2×1.9+1.1×12.5+12.5×1.9 =41.2×(8.1+1.9)+12.5×(1.1+1.9) 
=412+37.5 
=449.5
=(1+1.2)+(1+1.2)×2+(1+1.2)×3+...+(1+1.2)×99+
(1+1.2)×100
=2.2×(1+2+3+...+99+100)
=2.2×101×50
=11110
56
20
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