灵活计算下面各题(1)54.75-5.25-14.75 (2)16.4÷(4.3×2-0.4) (3)1.25×32 (4) 2

2025-03-17 18:06:01
推荐回答(1个)
回答1:

(1)54.75-5.25-14.75,
=54.75-(14.75+5.25),
=54.75-20,
=34.75;

(2)16.4÷(4.3×2-0.4),
=16.4÷(8.6-0.4),
=16.4÷8.2,
=2;

(3)1.25×32,
=(1.25×8)×4,
=10×4,
=40;

(4)
2
3
×[1-(
1
2
-
1
4
)],
=
2
3
×[1-
1
4
],
=
2
3
×
3
4

=
1
2