计算:(1)-20+(-14)-(-18)-13; (2)-3×(-2)+3-8;(...
计算:(1)-20+(-14)-(-18)-13;(2)-3×(-2)+3-8;(3)(38+16-34)×(-24)(4)-0.5+(-15)-(-17)-|-12|(...
计算:(1)-20+(-14)-(-18)-13; (2)-3×(-2)+3-8;(3)(38+16-34)×(-24)(4)-0.5+(-15)-(-17)-|-12|(5)-3÷(-3)+3×(-6)(6)-1+(-1)×(13-12)÷13-|-2|
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(1)-20+(-14)-(-18)-13
=-20-14+18-13
=-47+18
=-29;
(2)-3×(-2)+3-8
=6+3-8
=1;
(3)(
+
-
)×(-24)
=-9-4+18
=5;
(4)-0.5+(-15)-(-17)-|-12|
=-0.5-15+17-12
=-10.5;
(5)-3÷(-3)+3×(-6)
=1-18
=-17;
(6)-1+(-1)×(
-
)÷
-|-2|
=-1-1×(-
)×3-2
=-1+
-2
=-2
.
=-20-14+18-13
=-47+18
=-29;
(2)-3×(-2)+3-8
=6+3-8
=1;
(3)(
3 |
8 |
1 |
6 |
3 |
4 |
=-9-4+18
=5;
(4)-0.5+(-15)-(-17)-|-12|
=-0.5-15+17-12
=-10.5;
(5)-3÷(-3)+3×(-6)
=1-18
=-17;
(6)-1+(-1)×(
1 |
3 |
1 |
2 |
1 |
3 |
=-1-1×(-
1 |
6 |
=-1+
1 |
2 |
=-2
1 |
2 |
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