问题描述:
先想一想下面各题的运算顺序,再计算.102+35-27
4×15×5
72÷8×114
125×3+64
98+78÷6
(17×2-8)×4
84÷(54-47)
80-(15+5×7)
最佳答案:
(1)102+35-27
=137-27
=110
(2)4×15×5
=4×5×15
=20×15
=300
(3)72÷8×114
=9×114
=1026
(4)125×3+64
=375+64
=439
(5)98+78÷6
=98+13
=111
(6)(17×2-8)×4
=(34-8)×4
=26×4
=104
(7)84÷(54-47)
=84÷7
=12
(8)80-(15+5×7)
=80-(15+35)
=80-50
=30