怎么简便就怎么算
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25.12-12.84-5.16
=25.12-(12.84+5.16)
=25.12-18
=7.12
14.8×10.1
=14.8×10+14.8×0.1
=148+1.48
=149.48
2.5×2.8
=2.5×4×0.7
=10×0.7
=7
0.61×3.3+6.7×0.61
=0.61×(3.3+6.7)
=0.61×10
=6.1
=25.12-(12.84+5.16)
=25.12-18
=7.12
14.8×10.1
=14.8×10+14.8×0.1
=148+1.48
=149.48
2.5×2.8
=2.5×4×0.7
=10×0.7
=7
0.61×3.3+6.7×0.61
=0.61×(3.3+6.7)
=0.61×10
=6.1
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