问题
解答题
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答案
(1)125×32×25×9
=(125×8)×(4×25)×9
=1000×100×9
=900000;
(2)44×25
=40×25+4×25
=100+100
=1100;
(3)102×28
=100×28+2×28
=2800+56
=2856;
(4)308×81+308×20-308
=308×(81+20-1)
=308×100
=30800;
(5)96000÷125÷8
=96000÷(125×8)
=96000÷1000
=96;
(6)25×89×4
=25×4×89
=100×89
=8900.