小数脱式计算.docx

小数脱式计算.docx

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小数脱式计算

脱式计算（能简算的要简算）

2.5X7.1X4

16.12

X99＋16.12

5.2

X0.9＋0.964—

2.64X0.5

7.28X99+7.28

4.3

X50X0.2

（2.275

＋0.625）

X0.283.6

X9.85-5.46

3.94+34.3X0.2

1.2

X（9.6-2.4）-4.8

26X

15.7+15.7X24

8.05X3.4+7.6

6.58

X4.5X0.9

2.8

X0.5+1.58

2.7X5.4X3.9

（9.37+9.37+9.37+9.37）X2.54.2X1.75+1.8X1.753.8X10.1

2.37X6.3+2.37X3.72.5X1.25X0.322.5X（3.8X0.04）7.69X101

0.25X39+0.250.125X7246X0.33+54X0.3336.72-4.25X9.9

（8X5.27）X1.256.81+6.81

X99

0.25

X185X4012.5X8.8

4.07X0.86+9.125.67

X0.2-0.6218.1X0.92+3.93

0.043X24+0.8750.4

X0.7X0.25

0.78+5.436+136.72

-4.25X9.93.416-（0.016X35）

0.8X[（10—6.76）-1.2]

（6.8-6.8X0.55）-8.5

0.12X4.8-0.12X4.8

9.72X1.6-18.305-7

3.2X（1.5+2.5）-1.6

3.2X6+（1.5+2.5）-1.6

（3.2X1.5+2.5）-1.6

0.12X4.8-0.12X4.8

（31.8+3.2X4）

31.5X4—（6+3）

0.64X25X7.8+2.2

2-2.5+2.5-2

194—64.8-1.8X0.936.72-4.25X9.9

5.67X0.2-0.62

0.8X[（10—6.76）-1.2]18.1X0.92+3.93

0.4X0.7X0.25

0.75X10210.1X89-8.9

18.6X6.1+3.9X18.652.5x2.9+5.450.92x15+0.08x150.72X1.25X2.5

400.6x7-2003x0.41.25X（8+10）1.24+0.78+8.763.2x0.125x2.5

0.4X125X25X0.814.8X6.3-6.3X6.5+8.3X3.71.24+0.78+8.76

1.8+18-1.5-0.5X0.36.5X8+3.5X8-471.24+0.78+8.76

1.24X8.3+8.3X1.761.24+0.78+8.76

14.8X6.3-6.3X6.5+8.3X3.710.1X89-8.998.4X98+98.4X2

0.125X0.25X8X47.4X0.28+0.28X2.64.8X0.9+0.48

-0.03

（4—0.4）X2.5[（5.1—3.6）-0.8—1]X0.09（77.4—3.096-0.4）

30.1-[（6.07+2.53）X0.7]0.94X2.5+0.094X7538.5-5.5+1.5

9.28X13—9.28X4+9.2897.2-[（54.8+45.2）X（6—5.46）]

36.8-1.5+3.24.02＋5.4＋0.98

5.17

－1.8－3.2

＋7.56－2.68

13.75－（3.75＋6.48）54.8-2.57-3.433.68

7.85＋2.34－0.85＋4.6635.6－1.8－15.6－7.2

3.82＋2.9＋0.18＋9.19.6＋4.8－3.67.14－0.53－2.47

50.7-5.07-5.93

73.8

－1.64－13.8－5.36

5.27＋2.86－0.66＋1.6313.35－4.68＋2.65

4.8X100.156.5X9.9＋56.57.09X10.8-0.8X7.09

25.48-（9.4-0.52）18.76

X9.9+18.763.52-2.5-0.412.5X72

17.8-（1.78X4）1.25

X2.5X323.65

X10.170-28

15.2-0.25-4146.5

—（23+46.5）930

-0.6-54.9-1.4

3.83X4.56+3.83X5.444.36

X12.5X8

9.7

X99+9.74.5-1.8

27.5X3.7—7.5X3.78.54-2.5-0.43.2

X0.25X12.5

7.2X0.2+2.4X1.47.74

X（2.8-1.3）+1.5X2.260.79

X1993.9+1.8+1.1

3.9X2.7+3.9X7.318-1.8

-0.125-0.812.7

X9.9+1.2725X0.8

21X（9.3-3.7）-5.615.02-6.8-1.025.4

X11-5.43X3.7+1.11

2.3X16+2.3X23+2.39.43-

6.28-1.57）

3.65X4.7-36.5X0.37

639.36—0.4—0.8

1.37

X7.3+0.009

101X0.87-0.91X87

10.7

X16.1-15.1X10.7

4.8+8.63+5.2+0.37

2.35+1.713+0.287+7.651.57+0.245+7.436.02+3.6+1.98

1.28x8.6＋0.72x8.6

12.5

x0.96x0.8

10.4

－9.6x0.35

0.8x（4.3x1.25）

3.12

＋3.12x99

28.6

x101－28.6

7.6x0.8＋0.2x7.60.85

x1990.25

x8.5x41.76+0.195+3.24

3.2＋0.36＋4.8＋1.641.23

14—7.32—2.682.64

+8.67+7.36+11.33

（7.7+1.54）-0.7

（2.5—0.25）X0.49.16X1.5—0.5X9.163.6

—3.6X0.5

63.4—2.5—0.43.9

-（1.3X5）2.5X2.42.7

-4515-（0.15X0.4）

0.35X1.25X2X0.832.4X0.9+0.1X32.4

15-0.25

1.8—0.5—0.6

639.36

—0.4—0.81.8—0.5—0.6

7.4X27.6+73.4X7.43.6+2.4+16.4+7.615.8-2.3-5.8+6.3

0.25X16.2X4（1.25—0.125）X8

3.6X1024.8X10.14.8X7.8+78X0.52

3.72X3.5+6.28X3.515.6X2.1—15.6X1.1

56.5X99+56.5

7.09X10.8—0.8X7.093.14X0.68+31.4X0.032

1.87X9.9+0.187

4.2X99+4.2

1.25X2.5X32

3.83X4.56+3.83X5.44

4.36X12.5X89.7

X99+9.7

27.5X3.7-7.5X3.7

7.2X0.2+2.4X1.4

3.2X0.25X12.5

0.65X101

7.74X（2.8-1.3）+1.5X2.26

3.9X2.7+3.9X7.3

12.7X9.9+1.27

46X5723X86

2.22X9.9+6.66X6.7101X0.87-0.91X87

10.7X16.1-15.1X10.7

0.39X199

0.32X4038.9X1.01

0.25X36

0.25X0.73X4

3.65X10.1

12.5X0.96X0.8

4.2-3.5

10.6

X0.35—9.6X0.35