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计算:(1)|-10|+|+8|;(2)(-24)-(-15);(3)-3×(-4)×(-5);(4)(?78)÷(?34);(5)(?36
计算:(1)|-10|+|+8|;(2)(-24)-(-15);(3)-3×(-4)×(-5);(4)(?78)÷(?34);(5)(?36)×(29?14+118);(...
计算:(1)|-10|+|+8|;(2)(-24)-(-15);(3)-3×(-4)×(-5);(4)(?78)÷(?34);(5)(?36)×(29?14+118);(6)42×(?23)+(?34)÷(?14).
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(1)|-10|+|+8|
=10+8
=18;
(2)(-24)-(-15)=-9;
(3)-3×(-4)×(-5)
=12×(-5)
=-60;
(4)(?
)÷(?
)=
;
(5)(?36)×(
?
+
)
=-36×
+36×
-36×
=-8+9-2
=-1;
(6)42×(?
)+(?
)÷(?
)
=-28+3
=-25.
=10+8
=18;
(2)(-24)-(-15)=-9;
(3)-3×(-4)×(-5)
=12×(-5)
=-60;
(4)(?
7 |
8 |
3 |
4 |
7 |
6 |
(5)(?36)×(
2 |
9 |
1 |
4 |
1 |
18 |
=-36×
2 |
9 |
1 |
4 |
1 |
18 |
=-8+9-2
=-1;
(6)42×(?
2 |
3 |
3 |
4 |
1 |
4 |
=-28+3
=-25.
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