直接写得数: ×4=________; | 2- =________; | ÷ =________; | × =________; |
× =________; | ÷ =________; | × =________; | + =________; |
0÷ =________; | ×18=________; | × =________; | ÷ =________. |
1





016

分析:
+
先通分,再相加;0÷
根据0除以任何不为0的数都得0求解;
÷
要看清数值和运算符号,不要被迷惑;其它题目按照运算法则直接求解.解答:
解: ×4= ; | 2- =1 ; | ÷ = ; | × = ; |
× = ; | ÷ = ; | × = ; | + = ; |
0÷ =0; | ×18=16; | × = ; | ÷ = . |
,1
,
,
,
,
,
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,0,16,
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.点评:本题考查了基本的计算,计算时要细心,把结果化成最简分数.
×4=________;
÷
=________;
=________;
×
=________;
×
=________;