1.26÷6={#blank#}1{#/blank#}

0.768÷1.6={#blank#}2{#/blank#}

①503+197=             ② ×15=        ③0.8+ =       ④3.6×25%=

⑤ + × =       ⑥ ÷ =      ⑦8.01-2.1=      ⑧ × =

⑨47.8÷5.9≈                     ⑩12.5×8÷12.5×8=

6.28×1.262.8                        7.25÷0.927.25                     2.88×1.12.88÷1.1

3.9×0.93.9                            4.07×0.74.07÷0.7                3.65÷0.13.65×10

1.68×0.65=               2.49×7.2=

0.63÷0.21=              3.14÷0.82≈                (保留两位小数)