小学五年级上册：怎样将下列算式简便运算（脱式计算）： 26.7-0.5*0.5-0.75 0.56*3.14+3.14*0.44

1.25*3.7+1.25*5.3-1.25 19.7/1.25/8
=
=
=

26.7-0.5*0.5-0.75 0.56*3.14+3.14*0.44

26.7-0.5*0.5-0.75
=26.7-0.25-0.75
=26.7-(0.25+0.75)
=26.7-1
=25.7
0.56*3.14+3.14*0.44
=3.14*(0.56+0.44)
=3.14*1
=3.14
1.25*3.7+1.25*5.3-1.25
=1.25*(3.7+5.3-1)
=1.25*8
=10
19.7/1.25/8
=19.7/(1.25*8)
=19.7/10
=1.97

1.25*3.7+1.25*5.3-1.25 19.7/1.25/8 =1.25*(3.7+5.3-1) =19.7/(1.25*8) =10* =19.7*10 =197

（ ）三、计算 1、能用简便方法的就用简便方法计算： 2.5×（6.2-2.6）×0.4 3.61÷（7.2-5.3）×30 26.7-0.5×0.5-0.75 1.4×2

26.7-0.5*0.5-0.75 0.56*3.14+.314*0.44 =26.7-0.25-0.75 =(0.56+0.44)*3.14 =26.7-(0.25+0.75) =1*3.14 =26.7-1 =3.14 =25.7 1.25*3.7+1.25*5.3-1.25 19.7/1.25/8 =1.25*(3.7+5.3)-1.25 =19.7/(1.25*8) =1.25*9-1.25 =19.7/10 =1.25*(8+1)-1.25 =1.97 =1.25*8+1.25-1.25 =10