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算一算. 36+14+28= 46+17+36= 44+45+9= 72-18-24= 56-18-19= 42-14-28= 76-18+27= 4
算一算.36+14+28=46+17+36=44+45+9=72-18-24=56-18-19=42-14-28=76-18+27=44+28-19=64+18-39=...
算一算. 36+14+28= 46+17+36= 44+45+9= 72-18-24= 56-18-19= 42-14-28= 76-18+27= 44+28-19= 64+18-39=
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(1)36+14+28
=50+28
=78;
(2)46+17+36
=63+36
=99;
(3)44+45+9
=89+9
=98;
(4)72-18-24
=54-24
=30;
(5)56-18-19
=38-19
=19;
(6)42-14-28
=28-28
=0;
(7)76-18+27
=58+27
=85;
(8)44+28-19
=72-19
=53;
(9)64+18-39
=82-39
=43.
=50+28
=78;
(2)46+17+36
=63+36
=99;
(3)44+45+9
=89+9
=98;
(4)72-18-24
=54-24
=30;
(5)56-18-19
=38-19
=19;
(6)42-14-28
=28-28
=0;
(7)76-18+27
=58+27
=85;
(8)44+28-19
=72-19
=53;
(9)64+18-39
=82-39
=43.
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