①5.4+3.6=   

②12.5-6.7=   

③32.6+8.9=

 ①99          ②990            ③ 89

23×0{#blank#}1{#/blank#}0÷23    300平方分米{#blank#}2{#/blank#}4平方米    3千克{#blank#}3{#/blank#}2900克   

{#blank#}4{#/blank#}             {#blank#}5{#/blank#}                 {#blank#}6{#/blank#}

6.9-6=        0.9+0.6=      1-0.09=         0.9+0.1=

2.7+2.2=      0.2+0.8=      0.7-0.7=        5.5+11=

1.3-0=        9.7-7=        0.93+0.73=      13.8-0.8=

0.6+2.7=      5.4+0.3=      0.65+0.35=       0.8+8=

23×300=          320×4=         8×125=          220×40=

120+306=          45×20=         20×400=         560÷80=

800÷40=          15×40=         70×900=         50×20=

490÷70=          25×4=          800×50=         10×26=