口算:①1000-889=______; ②4.5×20%=______; ③13-14=______; ④1.25×32×25=______; ⑤50
口算:①1000-889=______;②4.5×20%=______;③13-14=______;④1.25×32×25=______;⑤50÷0.02=______;...
口算:①1000-889=______; ②4.5×20%=______; ③13-14=______; ④1.25×32×25=______; ⑤50÷0.02=______; ⑥49×27=______; ⑦1÷16=______; ⑧38-38÷3=______.
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