脫式計算(能簡算的要簡算,並寫出主要的簡便過程)(1)3 58 2 36 1 42 2 64(2)(14 16 13)

2021-03-27 21:55:37 字數 3775 閱讀 8264

1樓:手機使用者

(1)3.58-2.36+1.42-2.64=(3.58+1.42)-(2.36+2.64)=5-5

=0;(2)(14+1

6-13)×

48=1

4×48+1

6×48-1

3×48

=12+8-16

=4;(3)3998+85÷5×37

=3998+17×37

=3998+629

=4627;

(4)12.5×3.2×1

4=12.5×(0.8×4)×1

4=(12.5×0.8)×(4×14)

=10×1

=10.

脫式計算.(能簡算的要簡算,並寫出主要的簡便過程)(1)3.58-2.36-(2.64-1.42)(2)(14+16?13)×12

2樓:楷84修母

(1)3.58-2.36-(2.64-1.42)=3.58-2.36-2.64+1.42

=(3.58+1.42)-(2.36+2.64)=5-5

=0;(2)(14+1

6?13)×

12=1

4×12+1

6×12-1

3×12

=3+2-4

=1;(3)3.6×11

8+8.4÷8

11=3.6×11

8+8.4×11

8=(3.6+8.4)×11

8=12×11

8=332;

(4)3

4÷[3.75×(1.2?15)]

=34÷[3.75×1]=34

÷334=15.

脫式計算下面各題(能簡算的要用簡便方法計算,並寫出簡算過程). (84×27-2166)÷17 115×3.

3樓:小柒

①(84×27-2166)÷17,

=(2268-2166)÷17,

=102÷17,

=6;②11

5×3.7+5.3÷5

11+2.2,

=2.2×3.7+5.3×2.2+2.2,=2.2×(3.7+5.3+1),

=2.2×10,

=22;

③(0.75÷3-0.1)×(1-23),=(0.25-0.1)×13,

=0.15×13,

=0.05.

脫式計算。(能簡算的要簡算)寫出計算過程??謝謝啊 10

4樓:匿名使用者

1.0.9*0.2=0.18

1.8/0.5=3.6

5-0.18=4.82

4.82+3.6=8.42

2.0.55-0.15=0.4

0.75*0.4=0.3

0.783+0.3=1.083

1.083/19=0.057

3.5/6+7/8=20/24+21/24=41/24=1.7081.708/19=0.090

回答完bai

畢,du

給分zhi

,最dao佳謝回謝答!

脫式計算下面各題(能簡算的要用簡便方法計算,並寫出簡算過程). 450÷18×25+173. 670+65÷

5樓:匿名使用者

(1)450÷18×25+173,

=25×25+173,

=625+173,

=798;

(2)670+65÷3×35,

=670+65×(13×3

5),=670+65×15,

=670+13,

=683;

(3)58-1

6×45+57,=58

-215

+57,

=59120

+57,

=5759

120;

(4)38-12×6÷16,

=38-72÷16,

=38-4.5,

=33.5.

脫式計算,(能簡便的要簡便)3.82÷0.2-0.2×2.5,2.4×1.58+6.6×1.58+1.58,0.48×6.5+5.2×0.65

6樓:匿名使用者

3.82÷0.2-0.2×2.5

=38.2÷2-0.5=19.

1-0.5=18.62.

4×1.58+6.6×1.

58+1.58

=1.58x(2.4+6.

6+1)=1.58x10=15.80.

48×6.5+5.2×0.

65=4.8×0.65+5.

2×0.65

=(4.8+5.2)×0.

65=10×0.65=6.512.

4-12.4×0.25=12.

4×(1-0.25)=12.4×3/4=3.

1×3=9.3七分之五-(七分之五-二分之一)=5/7-5/7+1/2=1/20.125×9+1÷8

=9x1/8+1x1/8=(9+1)x1/8=5/4

脫式計算,能簡算的,要簡便方法。 4.32-(1.26+2.34) 4.58-(1.42+2.58) 3.6-1.28+3 5

7樓:翰林書院

4.32-(1.26+2.34)

=權4.32-3.6

=0.72

4.58-(1.42+2.58)

=4.58-1.42-2.58

=4.58-2.58-1.42

=2-1.42

=0.58

3.6-1.28+3

=2.32+3

=5.32

脫式計算(能簡算的要簡算).(1)( 14-120)×40 &...

8樓:桔梗

(1)(14-1

20)×

40      =14

×40-1

20×40

=10-2

=8;(內2)5

7×34×7×2

17=(5

7×7)×(34×217)

=5×4

=20;

(3)13×3

4÷容(34-5

12)      =13

×34÷13

=14÷13

=34;(4)99×97

98=98×97

98+1×97

98=97+97

98=979798.

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