0.4{#blank#}1{#/blank#}0.04      0.02{#blank#}2{#/blank#}0.16      2.04{#blank#}3{#/blank#}0.42

1.98{#blank#}1{#/blank#}1.08       5.0{#blank#}2{#/blank#}5.01

6.5-2.7{#blank#}3{#/blank#}4.4     2.9+3.1{#blank#}4{#/blank#}8.7-2.3

0.99{#blank#}5{#/blank#}1         1.01{#blank#}6{#/blank#}1.001

2.65元{#blank#}1{#/blank#} 1.88元    3.90元{#blank#}2{#/blank#} 3.58元     6.05元{#blank#}3{#/blank#} 6.10元

5.30元{#blank#}4{#/blank#} 5.3元     7.05元{#blank#}5{#/blank#} 7.50元     4.00元{#blank#}6{#/blank#} 40.0元

2.701◯2.7                 540÷9÷5◯540÷（9×5）

18厘米◯8分米           478-（209+178）◯478-209+178

①6.5÷5 ②14÷8

③6.37÷6.5 ④15.6÷3.25