计算各题,能简便运算的写出主要过程.36×(14+16+19)=59×7+59×11=23-89×34÷127=[1-(14+38)]÷14=-数学
题文
计算各题,能简便运算的写出主要过程.
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答案
(1)36×(
=36×
=9+6+4, =15+4, =19; (2)
=
=
=10; (3)23-
=23-
=23-18, =5; (4)[1-(
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题文
计算各题,能简便运算的写出主要过程.
|
答案
(1)36×(
=36×
=9+6+4, =15+4, =19; (2)
=
=
=10; (3)23-
=23-
=23-18, =5; (4)[1-(
|