3.2×3.4 15.8×3.2 3.2的简便计算
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3.2×3.4 15.8×3.2 3.2的简便计算
记得要简便计算!
记得要简便计算!
![3.2×3.4 15.8×3.2 3.2的简便计算](/uploads/image/z/7569920-56-0.jpg?t=3.2%C3%973.4+15.8%C3%973.2+3.2%E7%9A%84%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
3.2×3.4+15.8×3.2+3.2
=3.2×(3.4+15.8+1)
=3.2×20.2
=3.2×(20+0.2)
=64+0.64
=64.64
=3.2×(3.4+15.8+1)
=3.2×20.2
=3.2×(20+0.2)
=64+0.64
=64.64