如题所述
第1个回答 2021-02-20
2.4×2.5
=0.6×(4×2.5)
=0.6×10
=6
=0.6×(4×2.5)
=0.6×10
=6
第2个回答 2021-02-20
2.4×2.5
=4×2.5×0.6
=10×0.6
=6
=4×2.5×0.6
=10×0.6
=6
第3个回答 2021-02-20
原式=(2+0.4)x2.5
=2x2.5+0.4x2.5
=5+1
=6
=2x2.5+0.4x2.5
=5+1
=6
第4个回答 2021-02-20
=4×0.6×2.5
=4×2.5×0.6
=10×0.6
=6
=4×2.5×0.6
=10×0.6
=6