问题
解答题
计算: (1)-20+3+5-7 (2)(-3)×(-4)+(-28)÷7 (3)(
(4)-22+|4-7|-3×(-2)3. |
答案
(1)原式=-20-7+3+5=-27+8=-19;
(2)原式=12+(-4)=12-4=8;
(3)原式=-6+8-9=-7;
(4)原式=-4+3-3×(-8)=-4+3+24=23.
计算: (1)-20+3+5-7 (2)(-3)×(-4)+(-28)÷7 (3)(
(4)-22+|4-7|-3×(-2)3. |
(1)原式=-20-7+3+5=-27+8=-19;
(2)原式=12+(-4)=12-4=8;
(3)原式=-6+8-9=-7;
(4)原式=-4+3-3×(-8)=-4+3+24=23.