Question

能简算的简算一、80÷0.2÷4二、0.75x18÷0.15

Answer 1

一、80÷0.2÷4=80÷（0.2×4）=80÷0.8=100
二、0.75x18÷0.15=0.75÷0.15×18=5×18=90
三、2.8x3.6+1.4x2.8=2.8×（3.6+掸罚侧核乇姑岔太唱咖1.4）=2.8×5=14
四、21.36÷0.8-12.9=26.7-12.9=13.8
五、4.8x0.25=1.2×（4×0.25）=1.2×1=1.2

Answer 2

1 . 80 /0.2 /4
=80/(0.2x4)
=80/0.8
=100
2.0.75x18 /0.15
=0.75/0.15x18
=5x18
=90

Answer 3

一：80÷0.2÷4=400÷4=100
二：0.75x18÷0.15 =13.5÷0.15=13.5÷15/100约分=90

Answer 4

一、80÷0.2÷4
=80/(0.2*4)
=80/0.8
=100
二、0.75x18÷0.15
=0.75/0.15*18
=5*18
=90

Answer 5

小数化成分数,除号换成乘号。一、80*5*1/4=20*5=100.二、3/4*18*20/3=5*18=90