1、5/4x3+5/4 2、6/11x4/17+4/11x5/17 3、36x3/4-3÷4-3/4x3 4、23x(2
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/30 09:31:45
1、5/4x3+5/4 2、6/11x4/17+4/11x5/17 3、36x3/4-3÷4-3/4x3 4、23x(2/23+1/5)x5
1、5/4x3+5/4
=5/4×(3+1)
=5/4×4
=5
2、6/11x4/17+4/11x5/17
=4/11×6/17+4/11×5/17
=4/11×(6/17+5/17)
=4/11×11/17
=4/17
3、36x3/4-3÷4-3/4x3
=3/4×(36-1-3)
=3/4×32
=24
4、23x(2/23+1/5)x5
=23×2/23×5+23×1/5×5
=10+23
=33
=5/4×(3+1)
=5/4×4
=5
2、6/11x4/17+4/11x5/17
=4/11×6/17+4/11×5/17
=4/11×(6/17+5/17)
=4/11×11/17
=4/17
3、36x3/4-3÷4-3/4x3
=3/4×(36-1-3)
=3/4×32
=24
4、23x(2/23+1/5)x5
=23×2/23×5+23×1/5×5
=10+23
=33
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