推算.
|
(1)25 -17=___ |
(2)91 -85=___ |
|
15-7=___ |
91-5=___ |
|
95-7=___ |
11-5=___ |
推算.
|
(1)11 -2=___ |
(2)13 -6=___ |
(3)18 -9=___ |
|
31-2=___ |
23-16=___ |
68-9=___ |
|
31-12=___ |
53-16=___ |
68-29=___ |
推算.
|
(1)88 +4=___ |
(2)23 +59=___ |
|
8+4=___ |
23+9=___ |
|
8+74=___ |
3+9=___ |
推算.
|
(1)6 +8=___ |
(2)9 +5=___ |
(3)6 +7=___ |
|
16+8=___ |
19+15=___ |
6+47=___ |
|
16+28=___ |
29+25=___ |
16+47=___ |