张家界到长春火车票:小学数学题

(1) 1111 * 1.0001
=1111 * (1+0.0001)
=1111 * 1 + 1111 * 0.0001
=1111 + 0.1111
=1111.1111
（2）302*112
=(300 + 2) * 112
=300 * 112 + 2 * 112
=33600 + 224
=33824
（3）239*239-239*39
=239 * (239 - 39)
=239 * 200
=(200 + 39) * 200
=40000 + 7800
=47800
（4）0.85*102-82.5
=0.85 * (100 + 2) -82.5
=85 + 1.7 - 82.5
=4.2
（5）[3.7-3.7*（3.7-3.7）]除以3.7
=[3.7-3.7*0]/3.7
=[3.7-0]/3.7
=3.7/3.7
=1
（6）5*0.8除以5*0.8
=5*0.8/(5*0.8)
=(5/5)*(0.8/0.8)
=1/1
=1

(1) 1111 * 1.0001
=1111 * (1+0.0001)
=1111 * 1 + 1111 * 0.0001
=1111 + 0.1111
=1111.1111
（2）302*112
=(300 + 2) * 112
=300 * 112 + 2 * 112
=33600 + 224
=33824
（3）239*239-239*39
=239 * (239 - 39)
=239 * 200
=47800
（4）0.85*102-82.5
=0.85 * (100 + 2) -82.5
=85 + 1.7 - 82.5
=4.2
（5）[3.7-3.7*（3.7-3.7）]除以3.7
=3.7/3.7-3.7*（3.7-3.7)/3.7
=1-0
=1
（6）5*0.8除以5*0.8
=5*0.8/(5*0.8)
=(5/5)*(0.8/0.8)
=1/1
=1

1、1111.1111
2、33824
3、47800
4、4.2
5、1
6、1