直接写出得数
×3= | ×= | -0.25= | 72×= |
÷= | ÷= | 36÷= | ÷= |
我能用简便方法计算下面各题.
273×4500-45×17300 | 9999×7778+3333×6666. |
x和y成________比例.
x | 2 | 3 | 5 | ________ | 10 |
y | ________ | 4.5 | 7.5 | 12 | ________ |
直接写出得数. 3.6+9= | 324-199= | 0.78+1.52= |
25×7×4= | 125×24= | 4.6÷100= |
0.5×100= | 10-4.8-5.2= | 5-0.08= |
28÷4×7= | 0÷(5.9×6.1)= | 136+72+328= |