直接写得数.
|
10 ×650= |
700 ×30= |
11 ×500= |
直接写得数.
|
300 ×20= |
50 ×300= |
120 ×20= |
口算.
|
70×50 = |
320 ×2= |
5 ×400= |
口算.
|
32 ×30= |
240 ×2= |
600 ×7= |
算一算.
|
(1)12 ×8= |
(2)500 ×15= |
(3)14 ×5= |
(4)18 ×2= |
|
12 ×80= |
50 ×15= |
14 ×15= |
18 ×6= |
|
12 ×800= |
5 ×15= |
14 ×40= |
18 ×18= |
根据
57×45=2565直接写出下面各题得数.|
(1)570 ×45= |
(2)5700 ×45= |
|
(3)570 ×450= |
(4)57 ×450= |