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用简便方法计算.125×48602-49949×143-43×49543-132-43-68687-(487-60)(94×125)÷47

题目详情
用简便方法计算.
125×48602-49949×143-43×49
543-132-43-68687-(487-60)(94×125)÷47
▼优质解答
答案和解析
(1)125×48
=125×(8×6)
=(125×8)×6
=1000×6
=6000;

(2)602-499
=602-(500-1)
=602-500+1
=102+1
=103;

(3)49×143-43×49
=49×(143-43)
=49×100
=4900;

(4)543-132-43-68
=(543-43)-(132+68)
=500-200
=300;

(5)687-(487-60)
=687-487+60
=200+60
=260;

(6)(94×125)÷47
=94÷47×125
=2×125
=250.