题目
计算:
(1)
(﹣4)﹣1﹣(﹣4)﹣6;
(2)
6﹣(3﹣7)﹣|﹣5|;
(3)
(﹣ )﹣(﹣ )+(﹣ )+0.6;
(4)
(﹣54)÷18×(﹣ );
(5)
( ﹣ + )×(﹣36);
(6)
(﹣5)×7+13×7﹣6×7.
答案: 解:原式=(﹣4)﹣1+(+4)﹣6 =﹣4﹣1+4﹣6 =﹣7;
解:原式=6﹣(-4)﹣5 =6+4﹣5 =5;
解:原式=(﹣ 13 )+(+ 25 )+(﹣ 23 )+0.6 =﹣ 13 + 25 ﹣ 23 + 35 =﹣1+1 =0;
解:原式=54÷18× 13 =3× 13 =1;
解:原式= 12 ×(﹣36)﹣ 59 ×(﹣36)+ 712 ×(﹣36) =﹣18+20﹣21 =﹣19;
解:原式=7×(﹣5+13﹣6) =7×2 =14.