| 37-21= | 850÷100= |  = |  = |
 = |  = | 12×5= | 4.4×1.1= |
 = |  = | 36÷3= | 3-2.55= |
 = |  = | 210×10= |  = |
 = | 0.95=________% | 9.5-8.7= |  = |
0÷ = | 1.12=________% | 0.6+0.13= |  = |
2× = |  =________% | 0.4×0.9= |  = |
 = |  =________% | 2.4÷0.3= |  = |
 ×24= | 75%= | 1.2-1.16= |  = |
| 9÷8= | 15%=． |
倍是80，那么这个数是多少？
=
=
×21=
÷计算下列各题
| 3333×3333+9999×8889 | （ - ）×5×7 | 2007× |
 ×[4÷（ - ）] | （ + ）×7-21÷13 |  ÷8+ × ． |
