0.4+8.7= | 4.5+3.6= | 0.28+0.54= | 1.4-0.9= | 7.1-3.5= |
3-1.4= | 1÷10= | 0.32÷100= | 0.7×100= | 3.5×1000= |
1.2-0.5= | 0÷3200= | 25×4÷25×4= | 0.704-0.25= | 0.3+0.03= |
10-0.85= | 14.5+5.74= | 6.21-1.7= |
解:0.4+8.7=9.1 | 4.5+3.6=8.1 | 0.28+0.54=0.82 | 1.4-0.9=0.5 | 7.1-3.5=3.6 |
3-1.4=1.6 | 1÷10=0.1 | 0.32÷100=0.0032 | 0.7×100=70 | 3.5×1000=3500 |
1.2-0.5=0.7 | 0÷3200=0 | 25×4÷25×4=16 | 0.704-0.25=0.454 | 0.3+0.03=0.33 |
10-0.85=9.15 | 14.5+5.74=20.24 | 6.21-1.7=4.51 |
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