早教吧 育儿知识 作业答案 考试题库 百科 知识分享

脱式计算.108×39+247;319×28-549;489×17+198.

题目详情
脱式计算.
108×39+247;
319×28-549;
489×17+198.
脱式计算.
108×39+247;
319×28-549;
489×17+198.
脱式计算.
108×39+247;
319×28-549;
489×17+198.
脱式计算.
108×39+247;
319×28-549;
489×17+198.
脱式计算.
108×39+247;
319×28-549;
489×17+198.



▼优质解答
答案和解析
(1)108×39+247
=4212+247
=4459;

(2)319×28-549
=8932-549
=8383;

(3)489×17+198
=8313+198
=8511.
(1)108×39+247
=4212+247
=4459;

(2)319×28-549
=8932-549
=8383;

(3)489×17+198
=8313+198
=8511. (1)108×39+247
=4212+247
=4459;

(2)319×28-549
=8932-549
=8383;

(3)489×17+198
=8313+198
=8511. (1)108×39+247
=4212+247
=4459;

(2)319×28-549
=8932-549
=8383;

(3)489×17+198
=8313+198
=8511. (1)108×39+247
=4212+247
=4459;

(2)319×28-549
=8932-549
=8383;

(3)489×17+198
=8313+198
=8511.