(-2)3;(2)-7+3-6; (3)(-3)×(-8)×25;
(4)(-616)÷(-28); (5)-100-27; (6)(-1)*101; (7)0*21;
(8)(-2)*4; (9)(-4)*2; (10)-3*2; (11)-2*3;(
12)(-3)×(-5)2; (13)〔(-3)×(-5)〕2;
(14)(-3)2-(-6); (15)(-4×32)-(-4×3)2.
16)(-3)×(-5)2=(-3)×25=-75.
(17)〔(-3)×(-5)〕2=(15)2=225.
(18)(-3)2-(-6)=9-(-6)=9+6=15.
(19)(-4×32)-(-4×3)2
:(-2)2=4,
-52=-25,
(-1)5=-1,
(-1(1)-9+5×(-6)-(-4)2÷(-8);
(2)2×(-3)3-4×(-3)+15)4=1.
1)-8+4÷(-2);
(2)6-(-12)÷(-3);
(3)3•(-4)+(-28)÷7;
(4)(-7)(-5)-90÷(-15);
(-2)4+(-4)2•(-1)7〕2m•(53+35).
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