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(4)(+0.125)-1/4+(-3又1/8)+(-5又3/4)
= 1/8 - 1/4 - 3又1/8 - 5又3/4
= 1/8 - 3又1/8 - (1/4 +5又3/4)
= -3-6
=-9
(5)(-4又7/9)-(- 3又1/6)-(+2又2/9)+(-6又1/6)
= - 4又7/9 + 3又1/6 - 2又2/9 - 6又1/6
= - 4又7/9- 2又2/9+ 3又1/6 - 6又1/6
= -7-3
=-10
(6)= -1/2 - 7又1/2 - 3又1/4+ 11/4
= -8-0.5
=-8.5
= 1/8 - 1/4 - 3又1/8 - 5又3/4
= 1/8 - 3又1/8 - (1/4 +5又3/4)
= -3-6
=-9
(5)(-4又7/9)-(- 3又1/6)-(+2又2/9)+(-6又1/6)
= - 4又7/9 + 3又1/6 - 2又2/9 - 6又1/6
= - 4又7/9- 2又2/9+ 3又1/6 - 6又1/6
= -7-3
=-10
(6)= -1/2 - 7又1/2 - 3又1/4+ 11/4
= -8-0.5
=-8.5
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2017-07-31 · 知道合伙人教育行家
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(4)原式=0.125-1/4-3.125-5又3/4
=(0.125-3.125)-(1/4+5又3/4)
=-3-6
=-9
(5)原式=-4又7/9+3又1/6-2又2/9-6又1/6
=-(4又7/9+2又2/9)+(3又1/6-6又1/6)
=-7+(-3)
=-10
(6)原式=-0.5-3.25+2.75-7.5
=-(0.5+7.5)-(3.25-2.75)
=-8-0.5
=-8.5
=(0.125-3.125)-(1/4+5又3/4)
=-3-6
=-9
(5)原式=-4又7/9+3又1/6-2又2/9-6又1/6
=-(4又7/9+2又2/9)+(3又1/6-6又1/6)
=-7+(-3)
=-10
(6)原式=-0.5-3.25+2.75-7.5
=-(0.5+7.5)-(3.25-2.75)
=-8-0.5
=-8.5
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