如题所述
第1个回答 2016-03-20
4.8x25
=(1.2x4)x25
=1.2x(4x25)
=1.2x100
=120
或:
4.8x25
=(4+0.8)x25
=4x25+0.8x25
=100+20
=120
希望能帮到你!
=(1.2x4)x25
=1.2x(4x25)
=1.2x100
=120
或:
4.8x25
=(4+0.8)x25
=4x25+0.8x25
=100+20
=120
希望能帮到你!
第2个回答 2016-03-20
48x25
=(12x4)x25
=12x(4x25)
=12x100
=1200
希望能帮到你!本回答被网友采纳
=(12x4)x25
=12x(4x25)
=12x100
=1200
希望能帮到你!本回答被网友采纳
第3个回答 2016-03-20
=4×25×12
=100×12
=1200
=100×12
=1200