口算.
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(1)5 ×(17+8)= |
(2)6 ×(80-68)= |
|
(3)84 ÷(20-16)= |
(4)120 ÷(5+3)= |
|
(5)72 ÷(3×2)= |
(6)54 ÷(8÷4)= |
口算.
|
(1)96 -(42+28)= |
(2)100 -(80-45)= |
|
(3)(18 +6)×5= |
(4)(76 +74)÷3= |
|
(5)(48 -36)×7= |
(6)(70 -22)÷4= |
口算.
|
(1)15 ×3+12= |
(2)80 ÷2-15= |
|
(3)(32 -20)×5= |
(4)(96 -24)÷3= |
|
(5)120 ×(6-4)= |
(6)64 ÷(16-12)= |
口算.
|
(1)26 +25÷5= |
(2)38 -42÷7= |
|
(3)25 ×4-45= |
(4)48 ÷4+13= |
|
(5)64 +6×6= |
(6)60 -12×3= |
口算.
|
(1)6 ×7×2= |
(2)48 ÷4÷3= |
|
(3)80 -12×3= |
(4)90 -60÷4= |
|
(5)(9 +7)×3= |
(6)(45 -7)÷2= |
口算.
|
(1)13 ×3+4= |
(2)38 ÷2+5= |
|
(3)15 ×3-6= |
(4)72 ÷3-6= |
|
(5)23 +37+6= |
(6)50 -8-7= |
口算.
|
(1)5 ×6×2= |
(2)18 ÷2÷3= |
|
(3)60 -5×6= |
(4)80 -40÷2= |
|
(5)(7 +5)×3= |
(6)(8 -3)÷5= |
口算.
|
(1)3 ×6+2= |
(2)48 ÷4+3= |
(3)4 ×7-3= |
|
(4)69 ÷3-3= |
(5)12 +13+5= |
(6)30 -6-4= |
口算.
|
(1)408 +4= |
(2)408 -4= |
(3)408 ×4= |
|
(4)408 ÷4= |
(5)123 ×3= |
(6)123 ÷3= |
口算.
|
(1)693 ÷3= |
(2)609 ÷3= |
(3)480 ÷2= |
|
(4)720 ÷8= |
(5)540 ÷5= |
(6)624 ÷6= |