四年级下册数学题 口算 脱式计算 简算

1.2＋9＝10.2

5.43－3.06＝2.37

3＋1.2＝4.2

0.12＋5＝5.12

1.2＋1.8＋1.4＝4.4

6.2＋16＋3.8＝26

14－0.6＝13.4

20.3－8＝12.3

50－1.5＋4＝ 53.5

175－0.56＝174.44

2.08＋11＝13.089

0.4＋20＝ 20.4

2.5＋67＋7.5＝77

4.5－3＝1.5

25－0.38＝1.62

5.4＋9.6＝15

5.6－4＝1.6

1.45＋55＝56.45

4.6＋49＋51＝104.6

9.1－7＝2.1

10.3－0.3＝ 10

28＋9.2＝37.2

43.6＋2.08＝45.68

14－7.4＝6.6

0.65＋4.35＝ 5

10－5.4＝4.6

1.5－0.06＝1.44

0.36＋1.54＝2

14－7.4＝6.6

0.65＋4.35＝ 5

10－5.4＝4.6

1.5－0.06＝1.44

0.36＋1.54＝2

0.75＋0.25=1

1.37+1+7.63=10

5.6+2.7+4.4=12.7

9.14-1.43-4.57=3.14

77+2.7+2.3+25=107

1.88+2.3+3.7=7.88

9.14-1.43-4.57=3.14

77+2.7+2.3+25=107

1.88+2.3+3.7=7.88

0.34+0.45=0.79

0.57+0.9=1.47

8-4.6=3.4

0.6-0.37=0.23

4.9+9.8=14.7

39.5+98.8=138.3

1.4+2.8=4.2

1.5+3=4.5

1.6+3.2=4.8

1.7+3.4=5.1

1.8+3.6=5.4

1.9+3.8=5.7

0.2+0.40=0.6

2.1+4.2=6.3

2.2+4.4=6.6

2.3+4.6=6.9

2.4+4.8=7.2

2.5+5=7.5

2.6+5.2=7.8

2.7+5.4=8.1

2.8+5.6=8.4

2.9+5.8=8.7

0.3+0.6=0.9

3.1+6.2=9.3

3.2+6.4=9.6

3.3+6.6=9.9

1-0.3=0.7

1.5-0.4=1.1

2-0.5=1.5

2.5-0.6=1.9

3.0-0.7=2.3

3.5-0.8=2.7

4-0.9=3.1

4.5-1=3.5

5-1.1=3.9

5.5-1.2=4.3

6-1.3=4.7

6.5-1.4=5.1

7-1.5=5.5

7.5-1.6=5.9

8-1.7=6.3

8.5-1.8=6.7

9-1.9=7.1

9.5-2=7.5

10-2.1=7.9

10.5-2.2=8.3

11-2.3=8.7

11.5-2.4=9.1

12-2.5=9.5

12.5-2.6=9.9

13-2.7=10.3

0.2+0.6+0.0.2=1

2.8 + 1.5 + 0.7=5

3.12- 5.6 + 2.9=0.42

4.8- 5.4 + 1.4 =0.8

5.6- 3.8 – 0.38 = 1.42

6.4 + 5.9 + 3.7 = 16

7.5 - 3.2 + 4.5 = 8.8

8.7 + 1.8 + 1.9 = 12.4

9.9 - 5.6 + 5.6 =9.9

10.3 - 8.9 - 1.3= 0.1

11.7 + 5.49 + 3.14= 20.33

12.6 +1.2 + 2.3 = 16.1

13.8 - 4.5 + 11.5 =20.8

14.3 - 5.6 – 5.6 =3.1

15.9 - 2.7 – 10.21 = 2.99

16.5 - 1.8 – 1.4= 13.3

17.4 + 2.5 + 2.3= 22.2

18.4 + 8.7 – 5.6 =21.5

19.1+3.2 – 3.4 = 18.9

20.3 - 2.9 + 1.3= 18.7

21.5 - 2.5 + 3.7= 22.7

22.3 + 2.3 + 1.6= 26.2

23.1 + 2.3 + 5.6= 31

24.9 + 11 - 1.2= 34.7

25.5 - 11.5 + 4.3= 18.3

26.4 - 2.3 + 1.3 = 25.4

27.7 + 1.19 - 5.6= 23.29

28.1 + 3.4 - 2.3= 29.2

29.8 -2.16 + 1.2= 28.841.2＋9＝10.2

5.43－3.06＝2.37

3＋1.2＝4.2

0.12＋5＝5.12

1.2＋1.8＋1.4＝4.4

6.2＋16＋3.8＝26

14－0.6＝13.4

20.3－8＝12.3

50－1.5＋4＝ 53.5

175－0.56＝174.44

2.08＋11＝13.089

0.4＋20＝ 20.4

2.5＋67＋7.5＝77

4.5－3＝1.5

25－0.38＝1.62

5.4＋9.6＝15

5.6－4＝1.6

1.45＋55＝56.45

4.6＋49＋51＝104.6

9.1－7＝2.1

10.3－0.3＝ 10

28＋9.2＝37.2

43.6＋2.08＝45.68

14－7.4＝6.6

0.65＋4.35＝ 5

10－5.4＝4.6

1.5－0.06＝1.44

0.36＋1.54＝2

14－7.4＝6.6

0.65＋4.35＝ 5

10－5.4＝4.6

1.5－0.06＝1.44

0.36＋1.54＝2

0.75＋0.25=1

1.37+1+7.63=10

5.6+2.7+4.4=12.7

9.14-1.43-4.57=3.14

77+2.7+2.3+25=107

1.88+2.3+3.7=7.88

9.14-1.43-4.57=3.14

77+2.7+2.3+25=107

1.88+2.3+3.7=7.88

0.34+0.45=0.79

0.57+0.9=1.47

8-4.6=3.4

0.6-0.37=0.23

4.9+9.8=14.7

39.5+98.8=138.3

1.4+2.8=4.2

1.5+3=4.5

1.6+3.2=4.8

1.7+3.4=5.1

1.8+3.6=5.4

1.9+3.8=5.7

0.2+0.40=0.6

2.1+4.2=6.3

2.2+4.4=6.6

2.3+4.6=6.9

2.4+4.8=7.2

2.5+5=7.5

2.6+5.2=7.8

2.7+5.4=8.1

2.8+5.6=8.4

2.9+5.8=8.7

0.3+0.6=0.9

3.1+6.2=9.3

3.2+6.4=9.6

3.3+6.6=9.9

1-0.3=0.7

1.5-0.4=1.1

2-0.5=1.5

2.5-0.6=1.9

3.0-0.7=2.3

3.5-0.8=2.7

4-0.9=3.1

4.5-1=3.5

5-1.1=3.9

5.5-1.2=4.3

6-1.3=4.7

6.5-1.4=5.1

7-1.5=5.5

7.5-1.6=5.9

8-1.7=6.3

8.5-1.8=6.7

9-1.9=7.1

9.5-2=7.5

10-2.1=7.9

10.5-2.2=8.3

11-2.3=8.7

11.5-2.4=9.1

12-2.5=9.5

12.5-2.6=9.9

13-2.7=10.3

0.2+0.6+0.0.2=1

2.8 + 1.5 + 0.7=5

3.12- 5.6 + 2.9=0.42

4.8- 5.4 + 1.4 =0.8

5.6- 3.8 – 0.38 = 1.42

6.4 + 5.9 + 3.7 = 16

7.5 - 3.2 + 4.5 = 8.8

8.7 + 1.8 + 1.9 = 12.4

9.9 - 5.6 + 5.6 =9.9

10.3 - 8.9 - 1.3= 0.1

11.7 + 5.49 + 3.14= 20.33

12.6 +1.2 + 2.3 = 16.1

13.8 - 4.5 + 11.5 =20.8

14.3 - 5.6 – 5.6 =3.1

15.9 - 2.7 – 10.21 = 2.99

16.5 - 1.8 – 1.4= 13.3

17.4 + 2.5 + 2.3= 22.2

18.4 + 8.7 – 5.6 =21.5

19.1+3.2 – 3.4 = 18.9

20.3 - 2.9 + 1.3= 18.7

21.5 - 2.5 + 3.7= 22.7

22.3 + 2.3 + 1.6= 26.2

23.1 + 2.3 + 5.6= 31

24.9 + 11 - 1.2= 34.7

25.5 - 11.5 + 4.3= 18.3

26.4 - 2.3 + 1.3 = 25.4

27.7 + 1.19 - 5.6= 23.29

28.1 + 3.4 - 2.3= 29.2

29.8 -2.16 + 1.2= 28.84

30.1 + 1.5 – 1.5 =30.1

累死了，记得加分！！！！

0.4×125×25×0.8

=（0.4×25）×（125×0.8）

=10×100=1000

1.25×（8+10）

=1.25×8+1.25×10

=10+12.5=22.5

9123-（123+8.8）

=9123-123-8.8

=9000-8.8

=8991.2

1.24×8.3+8.3×1.76

=8.3×（1.24+1.76）

=8.3×3=24.9

9999×1001

=9999×（1000+1）

=9999×1000+9999×1

=10008999

14.8×6.3-6.3×6.5＋8.3×3.7

=（14.8-6.5）×6.3＋8.3×3.7

=8.3×6.3+8.3×3.7

=8.3×（6.3＋3.7）

=8.3×10

=83

1.24+0.78+8.76

=（1.24+8.76）+0.78

=10+0.78

=10.78

933-157-43

=933-（157+43）

=933-200 =733

4821-998

=4821-1000+2

=3823

32×125×25

=4×8×125×25

=（4×25）×（8×125）

=100×1000

=100000 9048÷26

=（2600+2600+2600+1248）÷26

=2600÷26+2600÷26+2600÷26+1248÷26

=100+100+100+48

=348

2881÷ 43

=（1290+1591）÷ 43

=1290÷43+1591÷43

=30+37 =67 3.2×42.3×3.75-12.5×0.423×16

=3.2×42.3×3.75-1.25×42.3×1.6

=42.3×(3.2×3.75-1.25×1.6)

=42.3×(4×0.8×3.75-1.25×4×0.4)

=42.3×(4×0.4×2×3.75-1.25×4×0.4)

=42.3×(4x0.4x7.5-1.25x4x0.4)

=42.3×[4×0.4×(7.5-1.25)]

=42.3×[4×0.4×6.25]

=42.3×(4×2.5)

=423

1.8+18÷1.5-0.5×0.3

=1.8+12-0.15

=13.8-0.15

=13.65

6.5×8+3.5×8-47

=52+28-47 =80-47 =33 (80-9.8)×5分之2-1.32

=70.2X2/5-1.32

=28.08-1.32

=26.76

8×7分之4÷[1÷(3.2-2.95)]

=8×4/7÷[1÷0.25]

=8×4/7÷4

=8/7

2700×（506－499）÷900

=2700×7÷900

=18900÷900

=21

33.02－（148.4－90.85）÷2.5

=33.02－57.55÷2.5

=33.02－23.02

=10