问题
解答题
脱式计算
930÷30+15
430+15×26
340÷17×2
(83-43)×38.
答案
(1)930÷30+15
=31+15
=46;
(2)430+15×26
=430+390
=820;
(3)340÷17×2
=20×2
=40;
(4)(83-43)×38
=40×38
=1520.
脱式计算
930÷30+15
430+15×26
340÷17×2
(83-43)×38.
(1)930÷30+15
=31+15
=46;
(2)430+15×26
=430+390
=820;
(3)340÷17×2
=20×2
=40;
(4)(83-43)×38
=40×38
=1520.