A-A+
计算:(1)20523-2.73-8.27+1713(2)59×7512+19×1712×5
问题详情
计算:
(1)20
(2)
(3)[(88+
(4)[2
参考答案
(1)20523-2.73-8.27+1713,
=(20523+1713)-(2.73+8.27),
=21226299-11,
=10226299;
(2)59×7512+19×1712×5,
=59×7512+59×1712,
=(7512+1712)×59,
=9×59,
=5;
(3)[(88+89)×1.125-54]÷23%,
=[(88+89)×118-54]÷23%,
=[(88×98+89×98)-54]÷23%,
=[99+1-54]÷0.23,
=46÷0.23,
=200;
(4)[249÷(325-1115)×1111]÷4.02,
=[229÷223×1111]÷4.02,
=[229×38×1211]÷4.02,
=1÷4.02,
=100÷402,
=50201.
考点: