问题
计算题
脱式计算。
|
答案
(1)(2540-1800)× 25-1200 | |
=740×25-1200 | |
=18500-1200 | |
=17300 | (2)375+903÷21×30 |
=375+43×30 | |
=375+1290 | |
=1665 | |
(3)(1896-896)÷(235+265) | |
=1000÷500 | |
=2 | (4)(100+1980÷18)÷70 |
=(100+110)÷70 |
=210÷70
=3
脱式计算。
|
(1)(2540-1800)× 25-1200 | |
=740×25-1200 | |
=18500-1200 | |
=17300 | (2)375+903÷21×30 |
=375+43×30 | |
=375+1290 | |
=1665 | |
(3)(1896-896)÷(235+265) | |
=1000÷500 | |
=2 | (4)(100+1980÷18)÷70 |
=(100+110)÷70 |
=210÷70
=3