算一算.
|
(1)44 -7= |
(2)55 +20= |
算一算.
|
(1)71 +8= |
(2)87 -80= |
算一算.
|
(1)52 -6= |
(2)45 +2= |
算一算.
|
(1)35 -3= |
(2)26 -7= |
用竖式计算.
|
(1)42 -7= |
(2)34 -9= |
比一比,算一算.
|
(1)86 -4= |
(2)48 -3= |
|
86 -40= |
48 -30= |
|
(3)39 +5= |
(4)23 +6= |
|
39 +50= |
23 +60= |
算一算,比一比.
|
(1)65 +30= |
(2)53 +4= |
|
65 +3= |
53 +8= |
|
(3)46 +4= |
(4)82 -20= |
|
46 +7= |
82 -2= |