Question

奥数题72个0.25乘70个4等于多少

Answer 1

72×0.25×70×4
=(72×70)×(0.25×4)
=5040

Answer 2

(72*0.25)*(70*4)
=72*70*0.25*4
=72*70
=5040

Answer 3

72×0.25×70×4
＝70×72×（0.25×4）
＝5040