口算．
|
(1)0.5 ＋0.2= |
(2)3.6 －2.8= |
|
(3)0.45 ＋0.54= |
(4)7.2 ＋1.9= |
口算．
|
2.2 －0.9= |
0.7 ＋0.4= 5－4.3= 8.6－4.6= |
口算．
|
2.4 ＋1.2= |
0.9 ＋6.5= 4.7－1.4= 0.28＋0.13= |
口算．
|
0.32 ＋0.26= |
7.4 －2.8= |
5 －0.7= |
1.3 ＋0.2= |
口算．
|
3.5 ＋0.8= |
1.8 －0.9= |
3.4 ＋2.5= |
4.7 －2.3= |
