问题
解答题
|
答案
(1)46+37+54+63
=(46+54)+(63+37)
=100+100
=200;
(2)25×(6×4)×5
=(25×4)×(6×5)
=100×30
=3000;
(3)125×7×4×2
=(125×4×2)×7
=1000×7
=7000;
(4)538-72-25-3
=538-(72+25+3)
=538-100
=438.
|
(1)46+37+54+63
=(46+54)+(63+37)
=100+100
=200;
(2)25×(6×4)×5
=(25×4)×(6×5)
=100×30
=3000;
(3)125×7×4×2
=(125×4×2)×7
=1000×7
=7000;
(4)538-72-25-3
=538-(72+25+3)
=538-100
=438.