用竖式计算。
139+257= 36×88= 756÷7=
375÷+5= 3.6+2.8= 23×45=
139+257=396
36×88=3168
同样的2满杯水,叔叔和阿姨各取了1杯。叔叔喝过后剩 34 ,阿姨喝过后剩 23 ,( )喝得多。
Teaching in a village is good for me.
先估一估得数大约是多少,再列竖式计算并验算.
8÷0.25=____