Name ____________________________       Date ___________________
Mrs. Labuski & Mrs. Portsmore Per ___   Unit 3 Lesson 6 Dividing Decimals
                                        OC 1-5 / TB 3-7 & 3-8

Steps for Dividing Decimals by Decimals:              Whatever you do outside the house,
                                                      you must do inside the house!

1. __________________________
                                                         3.2 )11.52
____________________________
2. __________________________
____________________________
                                                         32)11.52
3. __________________________                                   .
____________________________                             32)115.2
4. __________________________


Now you try:
1.) 9.0 ÷ 0.9               2.) 29.6 ÷ 3.7               3.) 10.81 ÷ 2.3
Evaluate the expression x ÷1.2 for the given value of x

1. x = 40.8                      2. x = 1.8                  3. x = 10.8




4. x = 14.4                      5. x = 4.32                 6. x = 0.06




7. Anna is saving $6.35 a week to buy a computer game that costs $57.15. How
many weeks will she have to save to buy the game?




8. Ben ran a 19.5-mile race last Saturday. His average speed during the race was 7.8
miles per hour. How long did it take Ben to finish the race?
Name ____________________________            Date ___________________
Mrs. Labuski & Mrs. Portsmore Per ___        Unit 3 Lesson 6 Dividing Decimals
                                             OC 1-5 / TB 3-7 & 3-8



Steps for Dividing Decimals by Decimals:             Whatever you do outside the house,
                                                     you must do inside the house!


1. Move the decimal in the divisor to
                                                        3.2)11.52
the right to make it a whole number
2. Move the decimal in the dividend
                                                         32)11.52
the same number of places                                      .
3. Bring up the decimal to the quotient                  32)115.2
4. Divide as usual.
Now you try:
1.) 9.0 ÷ 0.9               2.) 29.6 ÷ 3.7              3.) 10.81 ÷ 2.3
       ____                    ____                          ____
   0.9 ) 9.0                3.7)29.6                    2.3 )10.81
          ⇓                     ⇓                            ⇓
      ________                  ________                     ____________

     9)90                   37)296                      23)108.1
       10                        8                            4.7
     9)90                   37)296                      23)108.1
      -90                     -296                         - 92 ↓
        0                        0                            161
                                                             -161
                                                                0
Evaluate the expression x ÷1.2 for the given value of x
1. x = 40.8                2. x = 1.8             3. x = 10.8
    x ÷1.2                     x ÷1.2               x ÷1.2
 40.8÷1.2                    1.8÷1.2              10.8÷1.2
    ____                       ____                   _____
1.2)40.8                   1.2)1.8                1.2)10.8
     ⇓                          ⇓                      ⇓
   __________                 ________               __________

1.2)40.8                   1.2)1.8               1.2)10.8
    ⇓                          ⇓                     ⇓
   __________                 ________               __________

12)408                     12)18                 12)108
     34                         1.6                   9
12)408                     12)18.0               12)108
   -36↓                       -12↓                 -108
      48                         60                   0
     -48                        -60
        0                         0
4. x = 14.4                5. x = 4.32           6. x = 0.06
    x ÷1.2                     x ÷1.2              x ÷1.2
14.4 ÷1.2                  4.32 ÷1.2             0.06 ÷1.2
     __________                ________              __________

1.2)14.4                   1.2)4.32              1.2)0.06
    ⇓                          ⇓                     ⇓
  __________                   ________              __________

12)144                     12)43.2               12)00.6
    12                         3.6                  00.05
12)144                     12)43.2               12)00.60
  -12↓                       -36↓                     -60
    24                          92                      0
                               -92
                                 0
7. Anna is saving $6.35 a week to buy a computer game that costs $57.15. How
many weeks will she have to save to buy the game?
                           _____
                      6.35)57.15
                          _____
                      635)5715

                             9
                      635)5715
                         -5715
                              0

                     She will have to save for 9 weeks.
8. Ben ran a 19.5-mile race last Saturday. His average speed during the race was 7.8
miles per hour. How long did it take Ben to finish the race?

                                _____
                            7.8)19.5
                               ____
                            78)195

                                  2.5
                            78)195.0
                              -156 ↓
                                 390
                                -390
                                     0

               It took Ben 2.5 hours to complete the race.

Unit 3 lesson 6 diving decimals

  • 1.
    Name ____________________________ Date ___________________ Mrs. Labuski & Mrs. Portsmore Per ___ Unit 3 Lesson 6 Dividing Decimals OC 1-5 / TB 3-7 & 3-8 Steps for Dividing Decimals by Decimals: Whatever you do outside the house, you must do inside the house! 1. __________________________ 3.2 )11.52 ____________________________ 2. __________________________ ____________________________ 32)11.52 3. __________________________ . ____________________________ 32)115.2 4. __________________________ Now you try: 1.) 9.0 ÷ 0.9 2.) 29.6 ÷ 3.7 3.) 10.81 ÷ 2.3
  • 2.
    Evaluate the expressionx ÷1.2 for the given value of x 1. x = 40.8 2. x = 1.8 3. x = 10.8 4. x = 14.4 5. x = 4.32 6. x = 0.06 7. Anna is saving $6.35 a week to buy a computer game that costs $57.15. How many weeks will she have to save to buy the game? 8. Ben ran a 19.5-mile race last Saturday. His average speed during the race was 7.8 miles per hour. How long did it take Ben to finish the race?
  • 3.
    Name ____________________________ Date ___________________ Mrs. Labuski & Mrs. Portsmore Per ___ Unit 3 Lesson 6 Dividing Decimals OC 1-5 / TB 3-7 & 3-8 Steps for Dividing Decimals by Decimals: Whatever you do outside the house, you must do inside the house! 1. Move the decimal in the divisor to 3.2)11.52 the right to make it a whole number 2. Move the decimal in the dividend 32)11.52 the same number of places . 3. Bring up the decimal to the quotient 32)115.2 4. Divide as usual. Now you try: 1.) 9.0 ÷ 0.9 2.) 29.6 ÷ 3.7 3.) 10.81 ÷ 2.3 ____ ____ ____ 0.9 ) 9.0 3.7)29.6 2.3 )10.81 ⇓ ⇓ ⇓ ________ ________ ____________ 9)90 37)296 23)108.1 10 8 4.7 9)90 37)296 23)108.1 -90 -296 - 92 ↓ 0 0 161 -161 0
  • 4.
    Evaluate the expressionx ÷1.2 for the given value of x 1. x = 40.8 2. x = 1.8 3. x = 10.8 x ÷1.2 x ÷1.2 x ÷1.2 40.8÷1.2 1.8÷1.2 10.8÷1.2 ____ ____ _____ 1.2)40.8 1.2)1.8 1.2)10.8 ⇓ ⇓ ⇓ __________ ________ __________ 1.2)40.8 1.2)1.8 1.2)10.8 ⇓ ⇓ ⇓ __________ ________ __________ 12)408 12)18 12)108 34 1.6 9 12)408 12)18.0 12)108 -36↓ -12↓ -108 48 60 0 -48 -60 0 0 4. x = 14.4 5. x = 4.32 6. x = 0.06 x ÷1.2 x ÷1.2 x ÷1.2 14.4 ÷1.2 4.32 ÷1.2 0.06 ÷1.2 __________ ________ __________ 1.2)14.4 1.2)4.32 1.2)0.06 ⇓ ⇓ ⇓ __________ ________ __________ 12)144 12)43.2 12)00.6 12 3.6 00.05 12)144 12)43.2 12)00.60 -12↓ -36↓ -60 24 92 0 -92 0
  • 5.
    7. Anna issaving $6.35 a week to buy a computer game that costs $57.15. How many weeks will she have to save to buy the game? _____ 6.35)57.15 _____ 635)5715 9 635)5715 -5715 0 She will have to save for 9 weeks. 8. Ben ran a 19.5-mile race last Saturday. His average speed during the race was 7.8 miles per hour. How long did it take Ben to finish the race? _____ 7.8)19.5 ____ 78)195 2.5 78)195.0 -156 ↓ 390 -390 0 It took Ben 2.5 hours to complete the race.