Subtraction Calculations

Write the instructions for solving each of the calculations below.

 

a. 234 – 143

b. 317 – 181

c. 543 – 426

d. 353 – 135

 

Use the following terms whenever you can;

subtraction, units, tens, hundreds, place value columns, exchange, total,

Challenge – use time connectives such as first, then, after, finally.

 

 

14 thoughts on “Subtraction Calculations

  1. 1.first you do the sum that you have been given.
    234-143
    2.next you write h t u and write your number below.
    h t u
    2 3 4
    1 4 3
    3.then you do a line below your numbers.
    h t u
    2 3 4
    1 4 3
    ——-
    4. you start to work out the answer by starting with u. so you do 4-3=1

    h t u
    2 3 4
    1 4 3
    —–
    1
    5.then you do 3 subtract 4 which is impossible. so we use 1 from the h and put it infront of the 3. so the sum for the t is 13-4=9.

    h t u
    2 3 4
    1 4 3
    ——-
    9 1
    6. then you do the h and it is 1-1=0 because we took 1 earlier.
    h t u
    2 3 4
    1 4 3
    ——-
    0 9 1
    ——-

  2. 3.put the number you are taking away in the right column.
    th h t u
    234
    143
    4.put the takeaway sighn between the numbers.
    Th h t u
    2 3 4
    – 143
    5.put a line underneath they numbers.
    Th h t u
    2 3 4
    – 143
    ——————
    6.finally add the total which is 101
    Th h t u
    2 3 4
    – 143
    —————-
    101

  3. 1.234-143
    First you write Th h T u
    next you put the hudred under the hundrends colums.do same for tens and units
    Th h T u
    2 3 4
    do same again for 143
    Th h t u
    2 3 4
    1 4 3
    then you do the take away sighn next to the Th
    Th h t u
    – 2 3 4
    1 4 3
    ______________
    then you start from the u colums

    Th h t u
    – 2 3 4
    1 4 3
    _______________
    1

    then you do it for your t H

    Th h t u
    2 3 4
    – 1 4 3

    _____________________

    9 1

    then you cant do 3 – 4 so you exchange wich brings you 9 Finally you do the hundreds colum

    Th h t u

    2 3 4

    1 4 3
    __________
    0 9 1

  4. 234 – 143
    first you write your H T U
    H T U
    next you write your number underneath . 234
    143
    after that you take away the bottom numbers from the top number.you take away your units first then your tens and then your 100.

  5. a.First I have to write hundreds tens and units then write your numbers underneath.
    b.do a line then if you do subtraction it the same as adding
    c.take away the nunbers

  6. a. 234-143
    first you write TH H T U.
    next you put the right column

    TH H T U
    2 3 4

    then you do the same with the 143

    TH H T U
    2 3 4
    1 4 3
    _________

    then you start from the U column

    TH H T U
    2 3 4
    1 4 3
    __________
    1
    then you go to the H column

    • a. 234-143
      first you write TH H T U.
      next you put the right column

      TH H T U
      2 3 4

      then you do the same with the 143

      TH H T U
      2 3 4
      1 4 3
      _________

      then you start from the U column

      TH H T U
      2 3 4
      1 4 3
      __________
      1
      then you go to the H column

      TH H T U
      2 3 4
      1 4 3
      ________
      9 1

      then you end with the H

      TH H T U
      2 3 4
      1 4 3
      ________
      0 9 1

  7. a. 234 – 143=
    1.First we have to write Hundreds,Ten and Unit.
    2.Your next step is to write the 2,3 and 4 underneath the Hundreds,Ten and Unit column.
    3.Then draw a line to split the sums and the answers so they do not get messed up.
    4.Now you have to start from the units to get your answers right.
    H T U
    2 13 4
    – 1 4 3
    ___________
    1

    • 5.So now you have to take away 4 from 3 which is 1.
      6.Then you have to take away 3 from 4 you can’t do that so you have to exchange a ten from the hundreds column
      which will make it easerier for us because now it will be 13-4.The answer would be 9.
      7.There is going to be a 1-1=0
      8.Now the answer is 91.

      H T U
      2 3 4
      1 4 3
      ___________
      0 9 1

  8. a.234-143
    first you write H T U.
    next you write 234 under H T U.
    then you do the same for 143.
    after you draw a line under your numbers.

    H T U
    2 3 4
    1 4 3
    _____

    then you solve 4-3= and put the answer under the line in unit column.

  9. a.234-143
    1. first you have to write thousands, hundreds, tens and units in each box in a row.
    th h t u
    2.next you write the number you had under the thousands,hundreds,tens and units colmn.
    th h t u
    2 3 4

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