递等式计算(能简便计算的要简便):(1)478+208×5(2)200-124÷4(3)72÷2×5(4)65+65÷5(5)912-512+88(6)1903-475×4.-三年级数学

题目简介

递等式计算(能简便计算的要简便):(1)478+208×5(2)200-124÷4(3)72÷2×5(4)65+65÷5(5)912-512+88(6)1903-475×4.-三年级数学

题目详情

递等式计算(能简便计算的要简便):
(1)478+208×5(2)200-124÷4(3)72÷2×5
(4)65+65÷5(5)912-512+88(6)1903-475×4.
题型:解答题难度:中档来源:不详

答案

(1)478+208×5,
=478+1040,
=1518;

(2)200-124÷4,
=200-31,
=169;

(3)72÷2×5,
=36×5,
=180;

(4)65+65÷5,
=65+13,
=78;

(5)912-512+88,
=400+88,
=488;

(6)1903-475×4,
=1903-1900,
=3.

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