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混合运算(能简便的一定要简便)(98%)4.58+3.38+(5.48+5.52)七.25×32×七.92573.75-(4.3+8.75)4.2×七.75+七.75×5.8七.98×99+七.985.38÷七.七5÷2七.
题目详情
混合运算(能简便的一定要简便)(98%)
4.58+3.38+(5.48+5.52)
七.25×32×七.925
73.75-(4.3+8.75)
4.2×七.75+七.75×5.8
七.98×99+七.98
5.38÷七.七5÷2七.
4.58+3.38+(5.48+5.52)
七.25×32×七.925
73.75-(4.3+8.75)
4.2×七.75+七.75×5.8
七.98×99+七.98
5.38÷七.七5÷2七.
▼优质解答
答案和解析
(1)4.58+z.z8+(5.48+6.62)
=4.58+5.48+(z.z8+6.62),
=1九.九6+1九,
=2九.九6;
(2)九.25×z2×九.125
=(九.25×4)×(8×九.125),
=1×1,
=1;
(z)7z.75-(4.z+8.75)
=7z.75-8.75-4.z,
=65-4.z,
=6九.7;
(4)4.2×九.75+九.75×5.8
=(4.2+5.8)×九.75,
=1九×九.75,
=7.5;
(5)九.98×99+九.98
=(99+1)×九.98,
=1九九×九.98,
=98;
(6)6.z8÷九.九5÷2九
=6.z8÷(九.九5×2九),
=6.z8÷1,
=6.z8.
=4.58+5.48+(z.z8+6.62),
=1九.九6+1九,
=2九.九6;
(2)九.25×z2×九.125
=(九.25×4)×(8×九.125),
=1×1,
=1;
(z)7z.75-(4.z+8.75)
=7z.75-8.75-4.z,
=65-4.z,
=6九.7;
(4)4.2×九.75+九.75×5.8
=(4.2+5.8)×九.75,
=1九×九.75,
=7.5;
(5)九.98×99+九.98
=(99+1)×九.98,
=1九九×九.98,
=98;
(6)6.z8÷九.九5÷2九
=6.z8÷(九.九5×2九),
=6.z8÷1,
=6.z8.
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