1475-(362+475)简便方法计算
递等式计算(能简便的用简便方法计算)99.27-44.57+25.431100÷2554.12-14.45-5.55 ...
递等式计算(能简便的用简便方法计算) 99.27-44.57+25.43 1100÷25 54.12-14.45-5.55 1500-500÷25×4 77×22+23×22 [1475-(475+25×19)]÷25.
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(1)99.27-44.57+25.43
=54.7+25.43
=80.13;
(2)1100÷25
=(1100×4)÷(25×4)
=4400÷100
=44;
(3)54.12-14.45-5.55
=54.12-(14.45+5.55)
=54.12-20
=34.12;
(4)1500-500÷25×4
=1500-20×4
=1500-80
=1420;
(5)77×22+23×22
=22×(77+23)
=22×100
=2200;
(6)[1475-(475+25×19)]÷25
=[1475-(475+475)]÷25
=[1475-950]÷25
=525÷25
=21.
=54.7+25.43
=80.13;
(2)1100÷25
=(1100×4)÷(25×4)
=4400÷100
=44;
(3)54.12-14.45-5.55
=54.12-(14.45+5.55)
=54.12-20
=34.12;
(4)1500-500÷25×4
=1500-20×4
=1500-80
=1420;
(5)77×22+23×22
=22×(77+23)
=22×100
=2200;
(6)[1475-(475+25×19)]÷25
=[1475-(475+475)]÷25
=[1475-950]÷25
=525÷25
=21.
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