口算.
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(1)72 ×10=( ) |
(2)100 ×46=( ) |
|
(3)70 ×50=( ) |
(4)2000 ×10=( ) |
|
(5)12 ×20=( ) |
(6)32 ×30=( ) |
|
(7)4.7 +2.3=( ) |
(8)4.7 -2.3=( ) |
|
(9)3.6 -1.8=( ) |
(10) |
|
(11) |
(12) |
(分数,先填分子,后填分母)
口算.
(分数,先填分子,后填分母)|
(1) |
(2) |
|
(3) |
(4) |
|
(5) |
(6) |
|
(7) |
(8) |
直接写出下面各题的得数.
|
(1)1.4 +0.6= |
(2)4.7 -0.7= |
(3)1.4 +2.6= |
|
(4)1.9 -1.9= |
(5)3 -2.7= |
(6)4.6 +0.4= |
|
(7)2.8 -1.8= |
(8)6.7 -5.6= |
直接写出下面各题的得数.
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(1)0.4 +0.5= |
(2)2.7 -1.3= |
(3)1.4 +2.1= |
|
(4)3.5 -0.5= |
(5)2 -1.3= |
(6)6.1 +3.9= |
|
(7)2.8 -0.8= |
(8)4.5 -3.5= |