口算.
|
(1)2.5 +7.5= |
(2)0.3 +1.7= |
|
(3)8.6 -7.5= |
(4)10 -4.3= |
直接写出得数.
|
(1)0.4 +1.01= |
(2)0.47 +0.23= |
|
(3)2.4 -2.4= |
(4)3.9 -1.3= |
|
(5)1.8 +1.02= |
(6)10.68 -(3.68+0.89)= |
|
(7)0.04 +0.8= |
(8)1 -0.09= |
|
(9)0.2 +0.2-0.02= |
(10)25 ×9×4= |
|
(11)3.2 -0.01= |
(12)880 ÷25÷4= |
口算.
|
(1)0.34 +0.45= |
(2)7.7 +2.6= |
|
(3)3.6 -0.8= |
(4)0.39 +0.15= |
|
(5)6 -4.6= |
(6)0.35 -0.18= |
|
(7)0.08 +0.92= |
(8)7.4 -1.6= |
|
(9)3.5 +4.2+5.5= |
(10)7.8 -1.5-2.3= |
口算.
|
(1)4.8 +2.7= |
(2)6.1 -2.4= |
|
(3)1.3 +5.72= |
(4)10 -0.72= |
|
(5)3.36 +2.64= |
(6)7.52 -1.32= |
|
(7)7.3 +4.7+2.7= |
(8)13 -1.25-0.75= |
|
(9)4.96 +3.9+5.04= |
(10)7.36 -2.36+4.2= |
直接写出下面各题的得数.
|
(1)11.4 -3.5= |
(2)16.3 -7.3= |
(3)7.9 +12.1= |
|
(4)5.8 -4.9= |
(5)11.8 -6.9= |
(6)4.7 +5.6= |