一、递等式计算,能简便要简便
30.15-0.025×812.3×9.993.6×31-36+3.6×7913.8-1.8÷63.7×99+3.716÷5+16÷252.5÷50×4900125×0....
30.15-0.025×8 12.3×9.99 3.6×31-36+3.6×79
13.8-1.8÷6 3.7×99+3.7 16÷5+16÷25
2.5÷50×4900 125×0.48×15 1040.2÷14×99 展开
13.8-1.8÷6 3.7×99+3.7 16÷5+16÷25
2.5÷50×4900 125×0.48×15 1040.2÷14×99 展开
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30.15-0.025×8 =30.15-0.2=29.95
12.3×9.99=123-0.123=122.877
3.6×31-36+3.6×79=3.6x100=3600
13.8-1.8÷6=13.8-0.3=13.5
3.7×99+3.7 =3.7x100=370
16÷5+16÷25=3.2+0.64=3.84
2.5÷50×4900=5x49=245
125×0.48×15=100x9=900
1040.2÷14×99=7355.7
12.3×9.99=123-0.123=122.877
3.6×31-36+3.6×79=3.6x100=3600
13.8-1.8÷6=13.8-0.3=13.5
3.7×99+3.7 =3.7x100=370
16÷5+16÷25=3.2+0.64=3.84
2.5÷50×4900=5x49=245
125×0.48×15=100x9=900
1040.2÷14×99=7355.7
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