2. Transformations
to print

Name: ______________________________________  Subject: _______________________ Date: _______

Write on the right side what is missing.

   5 tenths, how many hundredths are? Every tenth has 10 hundredths, then 5 tenths will have 50 hundredths

7 tenths =

 

12 tenths =

 

324 tenths =

 

    We can go from tenths to hundredths, multiplying the tenths by 10. Integers are multiplied by 10, placing a 0 on the right.

    Write the correct answer:

7 x 10 =

 

18 x 10 =

 

375 x 10 =

 

Decimal numbers are multiplied by 10 moving the comma one place to the right. Example: 3.2 x 10 = 32

5,4 x 10 =

 

19,7 x 10 =

 

8,45 x 10 =

 

18,375 x 10 =

 

5,7 x 10 =

 

     When a decimal number has zeros after the comma, at the end of the number, we can delete those zeros since they have no value.

    Write the correct answer:

3,140 =

 

2,200 =

 

437,850 =

 

     In order to convert the tenths to thousandths, we multiply the tenths by 100, moving the decimal comma two places to the right. Example: 7.257 tenths = 725.7 thousandths.

    Write the correct answer:

3,2 Tenths =

 

3,75 Tenths  =

 

14,789 Tenths =

 

     In order to convert the units to thousandths, we multiply the tenths by 1000, moving the decimal comma three places to the right. Example: 5.25 units = 5250 thousandths.

    Write the correct answer:

6 units =

 

3,7 units  =

 

14,75 units =

 

     In order to convert hundredths to tenths we have to do groups of 10 hundredths to do a tenth. With 30 hundredths we have 3 tenths. What we have done is to divide by 10. For this we move the comma one place to the left. Example: 50 hundredths = 5 tenths.

    Write the correct answer:

70 hundredths =

 

130 hundredths  =

 

1200 hundredths=

 

     In order to convert hundredths to units we have to make groups of 100, move the decimal comma two places to the left. Example: 700 hundredths = 7 units.

    Write the correct answer:

3750 hundredths =

 

457 hundredths  =

 

56,5 hundredths=

 

     We convert the thousandths to units dividing by 1000, moving the decimal comma three places to the left. Example: 327 thousandths = 0.327 units.

    Write the correct answer:

2525 thousandths =

 

5 thousandths  =

 

25 thousandths =

 

     Transformation exercises

    Write the correct answer:

8 tenths =

 

45 units  =

 

75 tenths =

 

1,25 units =

 

475 thousandths =

 

13 hundredths =

 

14 units =

 

27 tenths =

 

13 thousandths =

 

7 units =

 






| Educational applications | Mathematics |
In Spanish  | Interactive







®Arturo Ramo García.-Record of intellectual property of Teruel (Spain) No 141, of 29-IX-1999
Plaza Playa de Aro, 3, 1º DO 44002-TERUEL