您现在的位置是:首页 >

五年级脱式计算简便运算的题 脱式计算下列各题,能简算的要简算(1)71+64÷16;(2)8.6×3-4.2;(3)57×(1-35);(4)917×18+1

火烧 2021-12-17 01:29:12 1057
脱式计算下列各题,能简算的要简算(1)71+64÷16;(2)8.6×3-4.2;(3)57×(1-35);(4)917×18+1 脱式计算下列各题,能简算的要简算(1)71+64÷16;(2)8.6

脱式计算下列各题,能简算的要简算(1)71+64÷16;(2)8.6×3-4.2;(3)57×(1-35);(4)917×18+1  

脱式计算下列各题,能简算的要简算(1)71+64÷16;(2)8.6×3-4.2;(3)57×(1-35);(4)917×18+1

(1)71+64÷16
=71+4
=75

(2)8.6×3-4.2
=25.8-4.2
=21.6

(3)

5 7

×(1-

3 5


=

5 7

×

2 5

=

2 7

(4)

9 17

×18+16×

9 17

=(18+16)×

9 17

=34×

9 17

=18

(5)

2 3

÷[(

1 2

+

1 3

)×

2 5

]
=

2 3

÷[

5 6

×

2 5

]
=

2 3

÷

1 3

=2

计算下列各题.(能简算的要简算)(1)0.25×18+34×18 (2)...

(1)0.25×

1 8

+

3 4

×

1 8

=(0.25+0.75)×

1 8

=1×

1 8

=

1 8

(2)

3 4

×20%+0.75×0.4
=0.75×(0.2+0.4)
=0.75×0.6
=0.45

(3)[1-(

1 2

-

1 4

)]×

2 3

=[1-

1 4

2 3

=

3 4

×

2 3

=

1 2

(4)3÷

7 4

-2×

4 7

=3×

4 7

-2×

4 7

=(3-2)×

4 7

=1×

4 7

=

4 7

计算下列各题,能简算的要简算.(1)3.2×0.25×1.25(2)8.23×8.6+1.4×8.23(

(1)3.2×0.25×1.25
=4×0.8×0.25×1.25
=(4×0.25)×(1.25×0.8)
=1×1
=1;

(2)8.23×8.6+1.4×8.23
=8.23×(8.6+1.4)
=8.23×10
=82.3;

(3)3.5÷(2-1.3)×4.5
=3.5÷0.7×4.5
=5×4.5
=22.5.

计算下列各题,能简算的要简算. (1- 14 15 )× 4 9 ÷ 5 18

(1)(1-

14 15 )×

4 9

÷

5 18


=

1 15

×

4 9

÷

5 18


=

1 15

×

4 9

×

18 5

=

1 15

×(

4 9

×

18 5

),
=

1 15

×

8 5


=

8 75

(2)30×(

1 15

+

4 5

+

1 3

),
=30×

1 15

+30×

4 5

+30×

1 3


=2+24+10,
=36;

(3)

1 4

×

3 5

+

2 5

÷4,
=

1 4

×

3 5

+

2 5

×

1 4


=

1 4

×(

3 5

+

2 5

),
=

1 4

×1,
=

1 4

(4)

3 16

÷0.375×

4 5


=

3 16

×

8 3

×

4 5


=

1 2

×

4 5


=

2 5

计算下列各题,能简算的要简算(1)37.68-5.72-78.63-4.28(2)112×(24-4 4 5 )÷24(3)1

(1)37.68-5.72-78.63-4.28,
=(37.68-78.63)-(5.72+4.28),
=-40.95-10,
=-50.95;

(2)112×(24-4

4 5

)÷24,
=112×19.2÷24,
=2150.4÷24,
=89.6;

(3)1993÷1993

1993 1995


=1993÷(1993+

1993 1995

),
=1993÷[1993×(1+

1 1995

)],
=1993÷[1993×

1996 1995

],
=1993÷1993÷

1996 1995


=1÷

1996 1995


=

1995 1996

(4)1÷(2÷3)÷(3÷4)÷(4÷5)÷…÷(1999÷2000),
=1÷

2 3

÷

3 4

÷

4 5

÷…÷

1998 1999

÷

1999 2000


=1÷(

2 3

×

3 4

×

4 5

×…×

1998 1999

×

1999 2000

),
=1÷

2 2000


=1000.

计算下列各题.(能简算的要简算)(1)7.8× 1 5 +2.2×20% ...

(1)7.8×

1 5 +2.2×20%,
=7.8×0.2+2.2×0.2,
=(7.8+2.2)×0.2,
=10×0.2,
=2;

(2)0.5×[5

五年级脱式计算简便运算的题 脱式计算下列各题,能简算的要简算(1)71+64÷16;(2)8.6×3-4.2;(3)57×(1-35);(4)917×18+1
1 5

÷﹙

7 8

-

1 16

﹚],
=0.5×[

26 5

÷

13 16

],
=0.5×[

26 5

×

16 13

],
=0.5×

32 5


=3.2;

(3)(198+32×72)-2472÷24,
=(198+2304)-103,
=[(200-2)+(2300+4)]-103,
=[200+2300+(4-2)]-103,
=2500+2-(100+3),
=2500-100-(3-2),
=2400-1,
=2399;

(4)4

2 5

×[2.6+

3 4

-(0.65+1

3 4

)]÷2

3 4


=4

2 5

×[2.6+

3 4

-0.65-1

3 4

]÷2

3 4


=4

2 5

×[2.6-0.65-(1

3 4

-

3 4

)]×

4 11


=

22 5

×[1.95-1]×

4 11


=

22 5

×0.95×

4 11


=1.52.

计算下列各题,能简算的要简算.(1)79÷115+29×511 (2)(16+19-112)×4×9 (3)(8.5-4)×10.3

(1)

7 9

÷

11 5

+

2 9

×

5 11


=(

7 9

+

2 9

)×

5 11


=

5 11

(2)(

1 6

+

1 9

-

1 12

)×4×9,
=

1 6

×36+

1 9

×36?

1 12

×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷

1 4

×[(1-

1 4

)×1.2],
=5÷

1 4

×[

3 4

×1.2],
=5÷

1 4

×

9 10


=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.

计算下列各题,能简算的要简算.(1)19.2÷2.4×3.2(2)9.6×10.1(3)14.3÷1.1-

(1)19.2÷2.4×3.2
=8×3.2
=25.6;

(2)9.6×10.1
=9.6×10+9.6×0.1
=96+0.96
=96.96;

(3)14.3÷1.1-0.8
=13-0.8
=12.2;

(4)3.2×2.4+32×0.76
=3.2×2.4+3.2×7.6
=3.2×(2.4+7.6)
=3.2×10
=32.

计算下列各题,能简算的要简算:①5.39+27+4.61+57②15.83-27-57③34-1

①5.39+

2 7

+4.61+

5 7

=(5.39+4.61)+(

2 7

+

5 7


=10+1
=11

②15.83-

2 7

-

5 7

=15.83-(

2 7

+

5 7


=15.83-1
=14.83

3 4

-

1 6

-

5 12

=

9 12

-

2 12

-

5 12

=

1 6

④1

7 9

+3

5 8

-

7 9

=1

7 9

-

7 9

+3

5 8

=1+3

5 8

=4

5 8

  
永远跟党走
  • 如果你觉得本站很棒,可以通过扫码支付打赏哦!

    • 微信收款码
    • 支付宝收款码