直接写出得数
2400÷4= | 103×3= | 90×9= | 84÷7= |
3×5+4= | 7×8+6= | 4900÷7= | 804÷4= |
0×5+6= | 108-98= | 750÷5= | 416-312= |
直接写出得数.
= | 16×50%= | 16÷= | = | ÷3= |
= | 4÷1%= | 2+1÷= | 7+= | 1÷= |
解方程
x+450=550 | x-0.52=1.3 | 7x+5x=120 | 4x-1.2=74. |
2400÷4= | 103×3= | 90×9= | 84÷7= |
3×5+4= | 7×8+6= | 4900÷7= | 804÷4= |
0×5+6= | 108-98= | 750÷5= | 416-312= |
= | 16×50%= | 16÷= | = | ÷3= |
= | 4÷1%= | 2+1÷= | 7+= | 1÷= |
x+450=550 | x-0.52=1.3 | 7x+5x=120 | 4x-1.2=74. |