直接写出得数: - =________; | - =________; | + =________; | -( + )=________; |
0.75- =________; | +10=________; | 1- =________; | + + =________. |

1
0.0510


分析:
-(
+
)根据减去两个数的和等于连续减去这两个数简算;0.75-
先把分数化成小数再计算;
+
+
运用加法交换律简算;其它题目根据运算法则直接求解.解答:
解: - = ; | - = ; | + =1; | -( + )= ; |
0.75- =0.05; | +10=10 ; | 1- = ; | + + = . |
,
,1,
,0.05,10
,
,
.点评:本题考查了基本的计算,计算时要细心,注意把运算的结果化成最简分数.
-
-
=________;
+
=________;
=________;