(1)-4.2+5.7-8.4+10 (2)-1/4+5/6+2/3-1/2 (3)12+(-18)+(-7)-15 (4)4.7-(-8.9)-7.5+(-6)
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(1)-4.2+5.7-8.4+10(2)-1/4+5/6+2/3-1/2(3)12+(-18)+(-7)-15(4)4.7-(-8.9)-7.5+(-6)(1)-4.2+5.7-8.4+10(2)-
(1)-4.2+5.7-8.4+10 (2)-1/4+5/6+2/3-1/2 (3)12+(-18)+(-7)-15 (4)4.7-(-8.9)-7.5+(-6)
(1)-4.2+5.7-8.4+10 (2)-1/4+5/6+2/3-1/2 (3)12+(-18)+(-7)-15 (4)4.7-(-8.9)-7.5+(-6)
(1)-4.2+5.7-8.4+10 (2)-1/4+5/6+2/3-1/2 (3)12+(-18)+(-7)-15 (4)4.7-(-8.9)-7.5+(-6)
-4.2+5.7-8.4+10=3.1
-1/4+5/6+2/3-1/2
=-3/12+10/12+8/12-6/12
=3/4
12+(-18)+(-7)-15
=12-18-7-15
=-28
4.7-(-8.9)-7.5+(-6)
=4.7+8.9-7.5-6
=0.1
(1)-4.2+5.7-8.4+10
=15.7-12.6
=3.1
(2)-1/4+5/6+2/3-1/2
=3/2-3/4
=3/4
(3)12+(-18)+(-7)-15
=12-40
=-28
(4)4.7-(-8.9)-7.5+(-6)
=13.6-13.5
=0.1
呵呵,加油!有什么不懂的再问,诚答!
-4.2+5.7-8.4+10
-4.2+5.7-8.4.10
-4.2+5.7-8.4+10
-4.2+5.7-8.4+10
-4.2+5.7-8.4+10
-4.2+5.7-8.4+10;计算
-4.2+5.7-8.4+10=?
-4.2+5.7-8.4+10=
-4.2+5.7-8.4+10简便计算
负4.2+5.7减8.4+10
—4.2+5.7—8.4+10
-8.4+10-4.2+5.7=
-4.2+5.7-8.4+10的有理数减法,
-4.2+5.7一8.4+10(过程)
-4.2+5.7+10-8.4等于多少
计算:(1)(-7)-9-(-3)+(-5) (2)-4.2+5.7-8.4+1计算:(1)(-7)-9-(-3)+(-5) (2)-4.2+5.7-8.4+10
-4.2+5.7-8.4+10.2
-4.2+5.7-8.4+10中的-4.2是减4.2还是负4.2