问题
解答题
脱式计算.
(1)400-400÷50
(2)38×(480÷16)
(3)130+70×16
(4)(240+760)÷40.
答案
(1)400-400÷50
=400-80
=320
(2)38×(480÷16)
=38×30
=1140
(3)130+70×16
=130+1120
=1250
(4)(240+760)÷40
=1000÷40
=25
脱式计算.
(1)400-400÷50
(2)38×(480÷16)
(3)130+70×16
(4)(240+760)÷40.
(1)400-400÷50
=400-80
=320
(2)38×(480÷16)
=38×30
=1140
(3)130+70×16
=130+1120
=1250
(4)(240+760)÷40
=1000÷40
=25