用简便方法计算:4×0.27×25 3.8×99+3.8 (8+4/9)÷4 2/5+3/7+3/5+4/74×0.27×253.8×99+3.8(8+4/9)÷42/5+3/7+3/5+4/7
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 16:01:48
![用简便方法计算:4×0.27×25 3.8×99+3.8 (8+4/9)÷4 2/5+3/7+3/5+4/74×0.27×253.8×99+3.8(8+4/9)÷42/5+3/7+3/5+4/7](/uploads/image/z/60158-38-8.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%9A4%C3%970.27%C3%9725+3.8%C3%9799%EF%BC%8B3.8+%EF%BC%888%EF%BC%8B4%2F9%EF%BC%89%C3%B74+2%2F5%EF%BC%8B3%2F7%EF%BC%8B3%2F5%EF%BC%8B4%2F74%C3%970.27%C3%97253.8%C3%9799%EF%BC%8B3.8%EF%BC%888%EF%BC%8B4%2F9%EF%BC%89%C3%B742%2F5%EF%BC%8B3%2F7%EF%BC%8B3%2F5%EF%BC%8B4%2F7)
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用简便方法计算:4×0.27×25 3.8×99+3.8 (8+4/9)÷4 2/5+3/7+3/5+4/74×0.27×253.8×99+3.8(8+4/9)÷42/5+3/7+3/5+4/7
用简便方法计算:4×0.27×25 3.8×99+3.8 (8+4/9)÷4 2/5+3/7+3/5+4/7
4×0.27×25
3.8×99+3.8
(8+4/9)÷4
2/5+3/7+3/5+4/7
用简便方法计算:4×0.27×25 3.8×99+3.8 (8+4/9)÷4 2/5+3/7+3/5+4/74×0.27×253.8×99+3.8(8+4/9)÷42/5+3/7+3/5+4/7
4×0.27×25
=0.27×4×25
=0.27×100
=27;
3.8×99+3.8
=3.8×(1+99)
=3.8×100
=380;
(8+4/9)÷4
=2+1/9
=19/9;
2/5+3/7+3/5+4/7
=(2/5+3/5)+(3/7+4/7)
=1+1
=2;