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2.69*4.56+4.56*6.33+4.56,5.45*24*0.2-3.45*4.8,4.26*52.7+35.2*5.27+0.222*527,用简便方法计算.
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答案和解析
2.69*4.56+4.56*6.33+4.56
=4.56*(2.69+6.33+1)
=4.56*10
=45.6
5.45*24*0.2-3.45*4.8
=5.45*4.8-3.45*4.8
=(5.45-3.45)*4.8
=2*4.8
=9.6
4.26*52.7+35.2*5.27+0.222*527
=4.26*52.7+3.52*52.7+2.22*52.7
=(4.26+3.52+2.22)*52.7
=(7.78+2.22)*52.7
=10*52.7
=527
=4.56*(2.69+6.33+1)
=4.56*10
=45.6
5.45*24*0.2-3.45*4.8
=5.45*4.8-3.45*4.8
=(5.45-3.45)*4.8
=2*4.8
=9.6
4.26*52.7+35.2*5.27+0.222*527
=4.26*52.7+3.52*52.7+2.22*52.7
=(4.26+3.52+2.22)*52.7
=(7.78+2.22)*52.7
=10*52.7
=527
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