问题
解答题
用你喜欢的方法计算.
10.64+7.65×2.4+11.76;10.5÷(5.2-3.2); 15.52-4.3-5.7;(6.1-4.6)÷0.8-1.
答案
(1)10.64+7.65×2.4+11.76
=10.64+18.36+11.76
=29+11.76
=40.76;
(2)10.5÷(5.2-3.2)
=10.5÷2
=5.25;
(3)15.52-4.3-5.7
=15.52-(4.3+5.7)
=15.52-10
=5.52;
(4)(6.1-4.6)÷0.8-1
=1.5÷0.8-1
=1.875-1
=0.875.