初一数学题，急需！
1. - 7/5 +(+1/10)
2. 90-(-3)
3. 0-(+5)-(-3.6)+(-4)
4. (-5.3)-(+4.8)+(3.2)-(-2.3)
5. -0.5-(-3 1/4)+2.75-(+7 1/2)
6.(-4 7/9)-(-3 1/6)-(+2 2/9)+(-6 1/6)
最新回答
凭栏听雨
2024-06-11 02:02:20
=-7.5+0.1
=-7.4
2. 90-(-3)
=90+3
=93
3. 0-(+5)-(-3.6)+(-4)
=-5+3.6-4
=-5.4
4. (-5.3)-(+4.8)+(3.2)-(-2.3)
=-5.3-4.8+3.2+2.3
=-10.1+5.5
=-4.6
5. -0.5-(-3 1/4)+2.75-(+7 1/2)
=-0.5+3.25+2.75-7.5
=6-8
=-2
6.(-4 7/9)-(-3 1/6)-(+2 2/9)+(-6 1/6)
=-4又7/9+3又1/6-2又2/9-6又1/6
＝-7-3
＝-10
咱ゝ么傀゛
2024-06-11 08:03:39
=-14/10+1/10
=-13/10=-1.3
2. 90-(-3)
=90+3
=93
3. 0-(+5)-(-3.6)+(-4)
=0+5+3.6-4
=4.6
4. (-5.3)-(+4.8)+(3.2)-(-2.3)
=-5.3-4.8+3.2+2.3
=-4.6
5. -0.5-(-3 1/4)+2.75-(+7 1/2)
=-1/2+13/4+11/4-15/2
=-8+6
=-2
6. (-4 7/9)-(-3 1/6)-(+2 2/9)+(-6 1/6)
=-43/9+19/6-20/9-37/6
=-7-3
=-10
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