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① + -
②8 -( + )
③ -0.25+ -
④ +( - )
⑤ ÷9+ ×
⑥14× ÷14×
803-207= ÷5= 798+150= + =
0.25×8= 1.5- = 7.5÷ = 0.77+0.3=
9.8-8= × = 45.54÷45= 24× =
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