504×5{#blank#}1{#/blank#}2520      420×3{#blank#}2{#/blank#}1260 

560×5{#blank#}3{#/blank#}2700      1256{#blank#}4{#/blank#}304×4

275+0=         700×4=         600+230=         305×2

465×0=         85×5=          972-200=         486+14=

65+26=         940-600=         + =            - =

6米{#blank#}1{#/blank#}30分米                     896×8{#blank#}2{#/blank#}7200

1500千克{#blank#}3{#/blank#}3吨                  280+415{#blank#}4{#/blank#}950-255

42×3

120×4

102×5

739×4

3×137{#blank#}1{#/blank#}137×3       0.54元{#blank#}2{#/blank#}0.6元       560÷7{#blank#}3{#/blank#}180÷2

35×4{#blank#}4{#/blank#}34×5           3时{#blank#}5{#/blank#}160分           4{#blank#}6{#/blank#}（32－16）÷4