问题
解答题
脱式计算.
|
答案
(1)(4.2+4.2÷2.1)÷0.2,
=(4.2+2)÷0.2,
=6.2÷0.2,
=31.
(2)5.7×[29-(3.06+5.94)],
=5.7×[29-9],
=5.7×20,
=114.
脱式计算.
|
(1)(4.2+4.2÷2.1)÷0.2,
=(4.2+2)÷0.2,
=6.2÷0.2,
=31.
(2)5.7×[29-(3.06+5.94)],
=5.7×[29-9],
=5.7×20,
=114.