(37+15)乘以85+1360的简便运算给个详细分析步骤

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(37+15)乘以85+1360的简便运算给个详细分析步骤(37+15)乘以85+1360的简便运算给个详细分析步骤(37+15)乘以85+1360的简便运算给个详细分析步骤(37+15)*85+13

(37+15)乘以85+1360的简便运算给个详细分析步骤
(37+15)乘以85+1360的简便运算给个详细分析步骤

(37+15)乘以85+1360的简便运算给个详细分析步骤
(37+15)*85+1360
=52*85+1360
=(50+2)*85+1360
=50*85+2*85+1360
=4250+170+1360
=5780

37+15=52
52*85=4420
4420+1360=5780

(37+15)×85+1360
=52×85+85×16
=(52+16) ×85
=68×85
=68×5×17
=340×17
=17×17×20
=289×20
=5780