一个数学问题，大神快来

Question

72％*24分之5+0.28*24分之5 和 0.25*32*12.5％

Answer 1

第一个 =(0.72+0.28)*24/5=1*24/5=24/5
第二个 =0.25*4*8*0.125=（0.25*4）*（8*0.125）=1*1=1

Answer 2

第一个用乘法分配律，得24分之5
第二个把32变成4×8，得1

Answer 3

(0.72+0.28)*5/24=5/24
1/4*32*0.125=8*0.125=1

Answer 4

72％× 5/24 + 0.28× 5/24
=(0.72+0.28)×5/24
=5/24
0.25×32×12.5％
=1/4 ×32 × 1/8
=1

Answer 5

=0.72*5/24+0.28*5/24 =0.25*32*0.125
=(0.28+0.72)*5/24 =0.25*(800*0.04)*0.125
=1*5/24 =0.25*0.04*(800*0.125)
=5/24 =0.01*100
=1本回答被提问者采纳