问题
解答题
一步一步地计算.
(780一230)×5
54×5×3
250×2×4
880+120×6.
答案
(1)(780-230)×5,
=550×5,
=2750;
(2)54×5×3,
=270×3,
=810;
(3)250×2×4,
=500×4,
=2000;
(4)880+120×6,
=880+720,
=1600.
一步一步地计算.
(780一230)×5
54×5×3
250×2×4
880+120×6.
(1)(780-230)×5,
=550×5,
=2750;
(2)54×5×3,
=270×3,
=810;
(3)250×2×4,
=500×4,
=2000;
(4)880+120×6,
=880+720,
=1600.