题目内容
口算. 0.68+0.06= |
5.2+0.48= | 1-0.73= | 3.6+4.8= | 0.78-0.28= | 20.9-9.7= |
10-0.09= | 3.8+0.12= | 0.01+0.1= | 4.9+5.1= | 4.7-0.47= | 8.7-7.8= |
0.68+0.06=0.74, | 5.2+0.48=5.68, | 1-0.73=0.27, | 3.6+4.8=8.4, | 0.78-0.28=0.5, | 20.9-9.7=11.2, |
10-0.09=9.91, | 3.8+0.12=3.92, | 0.01+0.1=0.11, | 4.9+5.1=10, | 4.7-0.47=4.23, | 8.7-7.8=0.9. |