①12.7×99+12.7
②
①x∶18=4∶24
②=
③38∶20=76∶x
④=
⑤∶x=∶
⑥x∶=8∶
①
③1.25×88+12.5×1.2
④
①14.56﹣6.62+5.44﹣8.38
②×0.8×12.5
③5.9×63+59×3.7
④÷[×(﹣)]
①600﹣300÷20×5
②(4.8﹣3.8÷2)×0.3
③3.45×99×2+6.9
④(8+ )÷4
⑤ ÷9+ ×
⑥ ÷[ ×( - )]