口算.
|
(1)86 -34= |
(2)750 -250= |
|
(3)390 +210= |
(4)1000 -300= |
口算.
|
(1)52 +35= |
(2)62 -18= |
|
(3)70 -26= |
(4)47 +33= |
口算.
|
(1)(3 +6)×8= |
(2)6 ×6-10= |
|
(3)15 +3×4= |
(4)(12 -3)×6= |
口算.
|
(1)5 ×9-27= |
(2)70 -5×8= |
|
(3)28 +7×6= |
(4)19 +5×3= |
口算.
|
(1)90 -(11+19)= |
(2)27 +5+13= |
|
(3)9 ×2-8= |
(4)58 -9-11= |