问题
解答题
脱式计算.(怎样简便就怎样计算)
25.25×0.64×4÷0.64;
78÷4÷0.25.
答案
(1)25.25×0.64×4÷0.64
=(25.25×4)×(0.64÷0.64)
=(25+0.25)×4×1
=25×4+0.25×4
=100+1
=101;
(2)78÷4÷0.25
=78÷(4×0.25)
=78÷1
=78.
脱式计算.(怎样简便就怎样计算)
25.25×0.64×4÷0.64;
78÷4÷0.25.
(1)25.25×0.64×4÷0.64
=(25.25×4)×(0.64÷0.64)
=(25+0.25)×4×1
=25×4+0.25×4
=100+1
=101;
(2)78÷4÷0.25
=78÷(4×0.25)
=78÷1
=78.