问题
解答题
脱式计算.
87+(510-150×3)
3008-46×25+298
48×(103+97)
答案
(1)87+(510-150×3)
=87+(510-450)
=87+60
=147;
(2)3008-46×25+298
=3008-1150+298
=1858+298
=2156;
(3)48×(103+97)
=48×200
=9600.
脱式计算.
87+(510-150×3)
3008-46×25+298
48×(103+97)
(1)87+(510-150×3)
=87+(510-450)
=87+60
=147;
(2)3008-46×25+298
=3008-1150+298
=1858+298
=2156;
(3)48×(103+97)
=48×200
=9600.