- =________; | + =________; | - =________; | - =________; |
3+ =________; | 5- =________; | + =________; | - =________; |
+ =________; | 2.2+6.8=________; | 0.79-0.32=________; | 1- =________. |
10
3
4
1
90.47
分析:横向数:(1)(3)(4)(8)依据分数减法计算方法解答,
(2)(7)(9)依据分数加法计算方法解答,
(5)(6)(12)依据整数加或减分数计算方法解答,
(10)(11)依据小数加减法计算方法解答.
解答:
解: - = ; | + =1; | - =0; | - = ; |
3+ =3 ; | 5- =4 ; | + =1; | - = ; |
+ = ; | 2.2+6.8=9; | 0.79-0.32=0.47; | 1- = . |
点评:本题主要考查学生依据分数、小数加减法计算方法解决问题的能力.
-
=________;
=________;
-
=________;
=________;
+
=________;
=________;
=________;