计算:
①4050﹣6030÷ =3900
②3×6+33×66+333×666=
③1﹣+﹣+﹣=
④方程:10.1﹣17X=1.86﹣15解是X=
⑤1÷(2÷3)÷(3÷4)÷(4÷5)÷…÷(19÷20)=
⑥3×(3+)+3.4×=
计算:
①4050﹣6030÷ =3900
②3×6+33×66+333×666=
③1﹣+﹣+﹣=
④方程:10.1﹣17X=1.86﹣15解是X=
⑤1÷(2÷3)÷(3÷4)÷(4÷5)÷…÷(19÷20)=
⑥3×(3+)+3.4×=
试题篮
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