34 +17 =       51 – 19 =     28 + 27 – 25=       100 – 48 + 37 =     6 + 6 + 6 =

6 × 3 =      4× 4=       3 ×3 =           5×2 =            2×4 =

53+9=           85-30=         33-6=            26+4=

92-40=          41+10=         84-8=            32+7=

25+6=          30+54=          42-5=            52-50=

34-7+20=       52-6-3=         69+（9-2）=      86-（20+50）=

5×8{#blank#}1{#/blank#}5×7+5               4×4{#blank#}2{#/blank#}15                23+5{#blank#}3{#/blank#}7×5

1米{#blank#}4{#/blank#}90厘米              26厘米{#blank#}5{#/blank#}62厘米         100厘米{#blank#}6{#/blank#}2米

42-36+85{#blank#}7{#/blank#}69+（30-9）    63-（22-11）{#blank#}8{#/blank#}43+33    54-27{#blank#}9{#/blank#}45+8