看谁算得又对又快!15×40=______;78-58=______; 17+37=______; 0.5+1.7=______; 12+12=_____...
看谁算得又对又快!15×40=______;78-58=______;17+37=______;0.5+1.7=______;12+12=______;200÷5=___...
看谁算得又对又快!15×40=______;78-58=______; 17+37=______; 0.5+1.7=______; 12+12=______;200÷5=______;3.9-2.9=______;20×60=______;20×33=______; 1-49=______;213÷3=______;125×8=______; 45+54=______; 4.8+2=______; 75÷3=______.
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