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用简便方法计算(1)3.7×99+3.7          

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用简便方法计算
(1)3.7×99+3.7             
(2)5.93+0.64+0.07+0.36
(3)5.37-1.47-2.53               
(4)105×(
1
3
用简便方法计算(1)3.7×99+3.7          
(1)3.7×99+3.7
=3.7×(99+1)
=3.7×100
=370;
           
(2)5.93+0.64+0.07+0.36
=(5.93+0.07)+(0.64+0.36)
=6+1
=7;
(3)5.37-1.47-2.53
=5.37-(1.47+2.53)
=5.37-4
=1.37;
             
(4)105×(
1
3+
1
5)
=105×
1
3+105×
1
5
=35+21
=56.