计算能简便的要简便计算8.03-3.16-3.84 3780÷35+13×308 &n...

2025-02-26 00:12:06
推荐回答(1个)
回答1:

①8.03-3.16-3.84       
=8.03-(3.16+3.84)
=8.03-7
=1.03

②3780÷35+13×308         
=108+13×(300+8)
=108+13×300+13×8
=108+3900+104
=212+3900
=4112

③25×3.2×125
=(25×4)×(0.8×125)
=100×100
=10000

④4÷
4
5
-
4
5
÷4
=4÷0.8-0.8÷4
=5-0.2
=4.8

4
5
×6.7+4.3×0.8-80%
=0.8×6.7+4.3×0.8-0.8×1
=0.8×(6.7+4.3-1)
=0.8×10
=8

⑥(
1
6
+
2
9
-
1
18
)×36
=
1
6
×36+
2
9
×36-
1
18
×36
=6+8-2
=12