3.68×(-17.5)-6.2×0.075+36×3又3/4-0.

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3.68×(-17.5)-6.2×0.075+36×3又3/4-0.

3.68×(-17.5)-6.2×0.075+36×3又3/4-0.
3.68×(-17.5)-6.2×0.075+36×3又3/4-0.

3.68×(-17.5)-6.2×0.075+36×3又3/4-0.
由3.68×(-17.5)-6.2×0.075+36×3又3/4-0.62×1/4
=3.68×(-17.5)-6.2(0.075+0.025)+36×3又3/4(其中1/4=0.25,)
=3.68×(-17.5)-6.2×0.1+36×15/4
=-6.44-0.62+135
=69.98.
本题只能部分简便运算.

3.68×(-17.5)-6.2×0.075+36×3又3/4-0.62×1/4= - 3.68*35/2 - 6.2*0.075 + 36*15/4 -6.2*0.025
= - 1.84*35 -0.62 + 9*15
...

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3.68×(-17.5)-6.2×0.075+36×3又3/4-0.62×1/4= - 3.68*35/2 - 6.2*0.075 + 36*15/4 -6.2*0.025
= - 1.84*35 -0.62 + 9*15
= -64.4-0.62+135
= 69.98

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