脱式计算(能简便的要简便).1+0.45÷0.9-0.75 16×23÷(45-815) 18÷(...
脱式计算(能简便的要简便).1+0.45÷0.9-0.7516×23÷(45-815)18÷(12+910)0.5×2.5×12.5×645.6×0.7+0.2×5.6+...
脱式计算(能简便的要简便).1+0.45÷0.9-0.75 16×23÷(45-815) 18÷(12+910)0.5×2.5×12.5×64 5.6×0.7+0.2×5.6+0.56.
展开
1个回答
展开全部
(1)1+0.45÷0.9-0.75
=1+0.5-0.75
=1.5-0.75
=0.75;
(2)
×
÷(
-
)
=
×
÷
=
÷
=
;
(3)18÷(
+
)
=18÷
=
;
(4)0.5×2.5×12.5×64
=0.5×2.5×12.5×(2×4×8)
=(0.5×2)×(2.5×4)×(12.5×8)
=1×10×100
=1000;
(5)5.6×0.7+0.2×5.6+0.56
=5.6×0.7+0.2×5.6+5.6×0.1
=5.6×(0.7+0.2+0.1)
=5.6×1
=5.6.
=1+0.5-0.75
=1.5-0.75
=0.75;
(2)
1 |
6 |
2 |
3 |
4 |
5 |
8 |
15 |
=
1 |
6 |
2 |
3 |
4 |
15 |
=
1 |
9 |
4 |
15 |
=
5 |
12 |
(3)18÷(
1 |
2 |
9 |
10 |
=18÷
7 |
5 |
=
90 |
7 |
(4)0.5×2.5×12.5×64
=0.5×2.5×12.5×(2×4×8)
=(0.5×2)×(2.5×4)×(12.5×8)
=1×10×100
=1000;
(5)5.6×0.7+0.2×5.6+0.56
=5.6×0.7+0.2×5.6+5.6×0.1
=5.6×(0.7+0.2+0.1)
=5.6×1
=5.6.
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询