一.52+98×99+46= 二.48×1.08+1.2×56.8= 三.18×5/7-5×4/7= 2.5×2.85+0.25÷2/23
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 13:32:21
![一.52+98×99+46= 二.48×1.08+1.2×56.8= 三.18×5/7-5×4/7= 2.5×2.85+0.25÷2/23](/uploads/image/z/48732-60-2.jpg?t=%E4%B8%80.52%EF%BC%8B98%C3%9799%EF%BC%8B46%EF%BC%9D+%E4%BA%8C.48%C3%971.08%EF%BC%8B1.2%C3%9756.8%EF%BC%9D+%E4%B8%89.18%C3%975%EF%BC%8F7%EF%BC%8D5%C3%974%EF%BC%8F7%EF%BC%9D+2.5%C3%972.85%EF%BC%8B0.25%C3%B72%EF%BC%8F23)
一.52+98×99+46= 二.48×1.08+1.2×56.8= 三.18×5/7-5×4/7= 2.5×2.85+0.25÷2/23
一.52+98×99+46= 二.48×1.08+1.2×56.8= 三.18×5/7-5×4/7= 2.5×2.85+0.25÷2/23
一.52+98×99+46= 二.48×1.08+1.2×56.8= 三.18×5/7-5×4/7= 2.5×2.85+0.25÷2/23
52+98×99+46
=98+98×99
=98×(1+99)
=98×100
=9800
48×1.08+1.2×56.8
=1.2×43.2+1.2×56.8
=1.2×(43.2+56.8)
=1.2×100
=120
18×5/7-5×4/7
=18×5/7-4×5/7
=5/7×(18-4)
=5/7×14
=10
2.5×2.85+0.25÷2/23
=2.5×2.85+0.25×11.5
=2.5×2.85+2.5×1.15
=2.5×(2.85+1.15)
=2.5×4
=10
一。原式=(52+46)十98x99
=98十98x99
=98(1十99)
=98x100
=9800。
二。原式=48(1•08+1•42)<...
全部展开
一。原式=(52+46)十98x99
=98十98x99
=98(1十99)
=98x100
=9800。
二。原式=48(1•08+1•42)
=48x2•5
=96+24
=120。
三。原式=5\7(18一4)
=5\7x14
=10。
四。原式=2•5(2•85+1•15)
=2•5x4
=10。
收起