如题所述
第1个回答 2018-03-13
28x25x3
=7x4x25x3
=(7x3)x(4x25)
=21x100
=2100本回答被网友采纳
=7x4x25x3
=(7x3)x(4x25)
=21x100
=2100本回答被网友采纳
第2个回答 2018-03-13
28×25×3
=7×4×25×3
=(7×3)×(4×25)
=21×100
=2100本回答被网友采纳
=7×4×25×3
=(7×3)×(4×25)
=21×100
=2100本回答被网友采纳
第3个回答 2018-03-13
=7×4×25×3
=4×25×3×7
=100×3×7
2100
=4×25×3×7
=100×3×7
2100
第4个回答 2024-04-04
=7×4×25×3
=25×4×7×3
=100×21
=2100
=25×4×7×3
=100×21
=2100