问题
解答题
计算:①(-3)+(-4)-(-11)-(-19) ②-14÷(-5)2×(-
|
答案
①原式=-3-4+11+19=23;
②原式=-1÷25×(-
)+0.2=5 3
+1 15
=1 5
+1 15
=3 15
.4 15
计算:①(-3)+(-4)-(-11)-(-19) ②-14÷(-5)2×(-
|
①原式=-3-4+11+19=23;
②原式=-1÷25×(-
)+0.2=5 3
+1 15
=1 5
+1 15
=3 15
.4 15