(1) —(—7)=_____ (2) —(—2.4)=_____(3) —(—2又2/3)=_______

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(1) —(—7)=_____ (2) —(—2.4)=_____(3) —(—2又2/3)=_______
(1) —(—7)=_____
(2) —(—2.4)=_____
(3) —(—2又2/3)=_______

(1) —(—7)=_____ (2) —(—2.4)=_____(3) —(—2又2/3)=_______
(1)-(-7)=7
(2)-(2.4)=2.4
(3)-(-2又2/3)=2又2/3

1:7
2:2.4
3:2又2/3

算式:
(1)-(-7)=7
(2)-(2.4)=2.4
(3)-(-2又2/3)=2又2/3
答案:
1:7
2:2.4
3:2又2/3

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