知识大全 计算下面各题,能简便的用简便方法计算.①25×+75÷4②1÷27×2627③(25-13)÷56④4.32+310+0.68+710

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计算下面各题,能简便的用简便方法计算.①25×+75÷4②1÷27×2627③(25-13)÷56④4.32+310+0.68+710

①25×

1
4

+75÷4
=25×

1
4

+75×

1
4


=(25+75)×

1
4


=100×

1
4


=25;

②1÷

2
7

×

26
27

=1×

7
2

×

26
27


=

91
27

③(

2
5

-

1
3

)÷

5
6

=

1
15

×

6
5


=

2
25

④4.32+

3
10

+0.68+

7
10

=(4.32+0.68)+(

3
10

+

7
10

),
=5+1,
=6.

计算下面各题,能简便的用简便方法计算.25×36×4 135×99 2...

(1)25×36×4,
=25×4×36,
=100×36,
=3600;

(2)135×99,
=135×(100-1),
=135×100-135×1,
=13500-135,
=13365;

(3)203-135÷5,
=203-27,
=176;

(4)97-12×6+43,
=97-72+43,
=25+43,
=68;

(5)49×99+49,
=49×(99+1),
=49×100,
=4900;

(6)5620÷(562×5),
=5620÷562÷5,
=10÷5,
=2;

(7)37+125+63+175,
=(37+63)+(125+175),
=100+300,
=400;

(8)175+25÷25+15,
=175+1+15,
=176+15,
=191;

(9)125×32×25,
=125×(4×8)×25,
=(125×8)×(4×25),
=1000×100,
=100000;

(10)156×l0l-156,
=156×(l00-1),
=156×100,
=15600.

计算下面各题,能简便的用简便方法计算.(841-41)÷25×4 83×29+71×83 &nbs...

(1)(841-41)÷25×4
=800÷25×4
=32×4
=128;

(2)83×29+71×83
=83×(29+71)
=86×100
=8500;

(3)101×99
=(100+1)×99
=100×99+1×99
=9900+99
=9999;

(4)199+199×99
=(199+1)×99
=200×99
=19800;

(5)560÷[490÷(34+36)]
=560÷[490÷70]
=560÷7
=80;

(6)28×37+73×37-37
=(28+73-1)×37
=100×37
=3700.

计算下面各题,能简便的要用简便方法计算.245-525÷25  ...

(1)245-525÷25
=245-21
=224;

(2)37×25×4
=37×(25×4)
=37×100
=3700;

(3)480÷60×122
=8×122
=976;

(4)138+44+62
=138+62+44
=200+44
=244;

(5)22×(23+27)
=22×50
=1100;

(6)125×16
=125×(8×2)
=125×8×2
=1000×2
=2000.

计算下面各题,能简便的用简便方法计算 (241-41)÷25×4 83×29+71×83 199+199×99 560

(1)(241-41)÷25×4,
=200÷25×4,
=8×4,
=32;

(2)83×29+71×83,
=83×(29+71),
=83×100,
=8300;

(3)199+199×99,
=199×(1+99),
=199×100,
=19900;

(4)560÷[490÷(34+36)],
=560÷[490÷70],
=560÷7,
=80;

(5)101×99,
=(100+1)×99,
=100×99+1×99,
=9900+99,
=9999;

(6)208×37-8×37,
=(208-8)×37,
=200×37,
=7400.

计算下面各题,能简便的用简便方法计算. 600÷25÷4 83×29+71×83 199+199×99 560÷[490

(1)600÷25÷4,
=600÷(25×4),
=600÷100,
=6;(2)83×29+71×83,
=83×(29+71),
=83×100,
=8300;

(3)199+199×99,
=199×(99+1),
=199×100,
=19900;

(4)560÷[490÷(34+36)],
=560÷[490÷70],
=560÷7,
=80;

(5)101×99,
=(100+1)×99,
=100×99+1×99,
=9900+99,
=9999;

(6)28×37+73×37-37,
=(28+73-1)×37,
=100×37,
=3700.

计算下面各题.(能简便的用简便方法计算) 6 5 × 2 15 + 2 15

(1)
6
5
×
2
15

+

2
15

÷

4
5


=

6
5

×

2
15

+

2
15

×

5
4


=

2
15

×(

6
5

+

5
4

),
=

2
15

×

49
20


=

49
150

(2)

8
3

×(

1
3

-

8
21

×

8
16

),
=

8
3

×(

1
3

-

4
21

),
=

8
3

×

1
7


=

8
21

(3)

9
10

×11-

9
10


=

9
10

×(11-1),
=

9
10

×10,
=9.

用简便的方法计算下面各题.25×125×4 &n...

(1)25×125×4,
=125×(25×4),
=125×100,
=12500;

(2)25×(4+2),
=25×4+25×2,
=100+50,
=150;

(3)124×25-25×24,
=(124-24)×25,
=100×25,
=2500;

(4)25×24,
=(25×4)×6,
=100×6,
=600.

计算下面各题,能简便的要用简便方法计算21÷(13+25)÷911920÷[12×(45+25)]5.65-6.29+5.35-2.713.7×99

(1)21÷(

1
3

+

2
5

9
11

=21÷

11
15

÷

9
11

=21÷(

11
15

×

9
11


=21÷

3
5

=35;

(2)

9
20

÷[

1
2

×(

4
5

+

2
5

)]
=

9
20

÷[

1
2

×

6
5

]
=

9
20

÷

3
5

=

3
4

(3)5.65-6.29+5.35-2.71
=(5.65+5.35)-(6.29+2.71)
=11-9
=2;

(4)3.7×99+3.7
=3.7×(99+1)
=3.7×100
=370.

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