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直接写出得数:0.5+0.4=______; 1.4+2.7=______; 8.2+3.7=______; 7.5+2.4=______; 1.8+2.7=__
直接写出得数:0.5+0.4=______;1.4+2.7=______;8.2+3.7=______;7.5+2.4=______;1.8+2.7=______;7.3...
直接写出得数:0.5+0.4=______; 1.4+2.7=______; 8.2+3.7=______; 7.5+2.4=______; 1.8+2.7=______; 7.3+0.9=______; 6.2+5.3=______; 2.0+1.8=______; 5.7+2.8=______; 6.6+2.2=______; 1.5+8.5=______; 7.4+1.6=______; 7.5-6.5=______; 3.2-2.3=______; 0.7+8.3=______.
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解:0.5+0.4=0.9; | 1.4+2.7=4.1; | 8.2+3.7=11.9; | 7.5+2.4=9.9; |
1.8+2.7=4.5; | 7.3+0.9=8.2; | 6.2+5.3=11.5; | 2.0+1.8=3.8; |
5.7+2.8=8.5; | 6.6+2.2=8.8; | 1.5+8.5=10; | 7.4+1.6=9; |
7.5-6.5=1; | 3.2-2.3=0.9; | 0.7+8.3=9. |
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