30-15+9{#blank#}1{#/blank#}6×3+6         67-29-12{#blank#}2{#/blank#}67-(29-12)

4×(54÷6){#blank#}3{#/blank#}18+8×2       5+35÷5{#blank#}4{#/blank#}(25+7)÷4

4×9÷6{#blank#}5{#/blank#}72÷9×2          7×9-18{#blank#}6{#/blank#}8×8-19

8×4{#blank#}1{#/blank#}5×6     72÷9{#blank#}2{#/blank#}32÷4      9×6{#blank#}3{#/blank#}34

25cm{#blank#}4{#/blank#}2dm    1m{#blank#}5{#/blank#}100cm      58dm{#blank#}6{#/blank#}8m

37+9＝        72÷9＝      83﹣18＝    62﹣36＝

67+13＝     530﹣360＝    6×6＝      74+45＝

95﹣61＝       40+36＝      56+21≈

914﹣472≈     789﹣306≈     632+148≈

30×030+0    24×212×4    45×254×2

38×448×3    102×3103×2    290×3180×5