题目内容
| 请你口算. 0.38+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= |
| 0.38+0.06=0.44; | (155+20)-65=110; | 64.2+5.7=69.9; | 543-27-73=443; |
| 0.97-0.09=0.88; | 12.8-9.86=2.94; | 17.05-4.58=12.47; | 9800÷25÷4=98. |
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