Current location - Training Enrollment Network - Mathematics courses - Simple calculation of mathematical problems in the second volume of the fourth grade of oral arithmetic
Simple calculation of mathematical problems in the second volume of the fourth grade of oral arithmetic
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+ 1 1= 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+5 1= 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

1 1-2.3=8.7

1 1.5-2.4=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

1 1.7 + 5.49 + 3. 14= 20.33

12.6 + 1.2 + 2.3 = 16. 1

13.8 - 4.5 + 1 1.5 =20.8

14.3 - 5.6 – 5.6 =3. 1

15.9 - 2.7 – 10.2 1 = 2.99

16.5 - 1.8 – 1.4= 13.3

17.4 + 2.5 + 2.3= 22.2

18.4 + 8.7 – 5.6 =2 1.5

19. 1+3.2 – 3.4 = 18.9

20.3 - 2.9 + 1.3= 18.7

2 1.5 - 2.5 + 3.7= 22.7

22.3 + 2.3 + 1.6= 26.2

23. 1 + 2.3 + 5.6= 3 1

24.9 + 1 1 - 1.2= 34.7

25.5 - 1 1.5 + 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 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+ 1 1= 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+5 1= 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

1 1-2.3=8.7

1 1.5-2.4=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

1 1.7 + 5.49 + 3. 14= 20.33

12.6 + 1.2 + 2.3 = 16. 1

13.8 - 4.5 + 1 1.5 =20.8

14.3 - 5.6 – 5.6 =3. 1

15.9 - 2.7 – 10.2 1 = 2.99

16.5 - 1.8 – 1.4= 13.3

17.4 + 2.5 + 2.3= 22.2

18.4 + 8.7 – 5.6 =2 1.5

19. 1+3.2 – 3.4 = 18.9

20.3 - 2.9 + 1.3= 18.7

2 1.5 - 2.5 + 3.7= 22.7

22.3 + 2.3 + 1.6= 26.2

23. 1 + 2.3 + 5.6= 3 1

24.9 + 1 1 - 1.2= 34.7

25.5 - 1 1.5 + 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

I'm exhausted, remember to add points! ! ! !