| 38+0.06=________; | (155+20)-65=________; | 64.2+5.7=________; |
| 543-27-73=________; | 0.97-0.09=________; | 12.8-9.86=________; |
| 17.05-4.58=________; | 9800÷25÷4=________; | 3.5+0.6=________; |
| 5-0.15=________; | 4.35+5.36=________; | 99×66+66=________; |
| 0.81+0.09=________; | 0÷78=________; | 50-20÷5=________; |
| 35×25×4=________. |
看谁算的又准又快!
| 0.75×4= | 3.5÷0.7= | 5×0.23= | 8.5+2.4= | 7.7+2.3×10= |
| 5.6-3.7= | 0.6×50= | 0.45÷9= | 0.9×0.37= | 5.6÷0.8-0.7= |
解方程.
| 85+1.5X=6.1 | 1.6X-X=3.6. |