直接写出下面各题的得数.
|
(1)2.1 +3.6= |
(2)7.5 -3.2= |
(3)6.02 +2.8= |
|
(4)10.3 -8.4= |
(5)2 -1.6= |
(6)0.5 +2.7= |
|
(7)3.4 -2.8= |
(8)0.25 +1.6= |
直接写出下面各题的得数.
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(1)40 ×30= |
30 ×40= |
|
(2)50 ×20= |
20 ×50= |
|
(3)80 ×10= |
10 ×80= |
|
(4)60 ×30= |
30 ×60= |
|
(5)70 ×40= |
40 ×70= |
|
(6)22 ×30= |
30 ×22= |
|
(7)31 ×20= |
20 ×31= |
直接写出下面各题的得数.
|
(1)6 ×10= |
(2)10 ×27= |
|
(3)86 ×10= |
(4)20 ×13= |
|
(5)80 ×10= |
(6)60 ×20= |
|
(7)6 ×100= |
(8)70 ×40= |
|
(9)80 ×20= |
(10)20 ×90= |
口算.
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(1)0.2 +0.3= |
(2)1.2 +0.7= |
|
(3)3.8-1.5= |
(4)5.6 -2.5= |
|
(5)3.4 -0.2= |
(6)4.1 +0.8= |
|
(7)6.2+0.8= |
(8)4.7 -0.3= |
口算.
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(1)26 ×10= |
34 ×10= |
28 ×20= |
16 ×30= |
|
(2)80 ×10= |
100 ×20= |
32 ×30= |
40 ×12= |