题目内容
口算．
(1)25÷4=
(2)30÷7=
(3)31÷6=
(4)43÷8=
答案：6,1;4,2;5,1;5,3
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口算：
 = |  = |  × = | 1÷ = | 25×10%= |
| ÷10= | 25%： = | 2- = |  = |  × +× = |
题目内容
口算．
(1)25÷4=
(2)30÷7=
(3)31÷6=
(4)43÷8=
| = | = | ×= | 1÷= | 25×10%= |
| ÷10= | 25%：= | 2-= | = | ×+×= |