15.25-(5.5-4.75)简便运算
15.25-(5.5-4.75)简便运算
15.25-(5.5-4.75)
=15.25+4.75-5.5
=20-5.5
=14.5
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15.25-(5.25+8.2)的简便运算
15.25-5.25-8.2=10-8.2=1.8
15.25-3.1+0.75-4.9简便运算
15.25-3.1+0.75-4.9
= (15.25+0.75)-(3.1+4.9)
= 16 - 8
=8
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70.8*0.25-4.75简便运算
70.8*0.25-4.75
=70.8*1/4-4又3/4
=70.8/4-19/4
=51.8/4
=12.95
4.75×37.5%×5.25 的简便运算
4.75×37.5%×5.25
=(5-0.25)×(5+0.25)×3/8
=(25-1/16)×3/8
=(25-1/16)×3/8
=1197/128
4.75×8-7.5简便运算
简便运算
4.75×8-7.5
=38-7.5
=30.5
23.5-2.8+4.75=( )简便运算
23.5-2.8+4.75
=23.5+4.75-2.8
=28.25-2.8
=25.45
15.25-3.1 0.75-4.9的简便运算
15.25-3.1+ 0.75-4.9
=(15.25+ 0.75)-(3.1+4.9)
=16-8
=8
1.25+4.6+4.75的简便运算
简便运算;
1.25+4.6+4.75
=1.25+4.75+4.6
=6+4.6
=10.6