0点76减九分之二加1点24减9分之七

=(0.76 1.24)-(2/9 7/9)

=2-1

=1

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76×1/8加24×0点125的简便运算

76×1/8加24×0点125

=76×0.125 24×0.125

=（76 24）×0.125

=100×0.125

=0.1

7.6×35/100加6.5×0点76

7.6×35/100 6.5×0.76

=7.6×0.35 0.65×7.6

=7.6×（0.35 0.65）

=7.6×1

=7.6