Adding by 6IU3D4n

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									Adding
Adding by Partitioning Vertically



      156
  +   232

      300           1 0 0 + 200
        80            50+30
           8            6+2

      388
                      Formal
    Partitioning
     Vertically       Written
                      Method

     2378            2 3 7 8
+    1149          + 1 1 4 9

     3000            3 5 2 7
        400             1 1
        110
          17

      3527
                      Formal
    Partitioning
     Vertically       Written
                      Method

     4578            4 5 7 8
+    2349          + 2 3 4 9

     6000            6 9 2 7
        800             1 1
        110
          17

      6927
                      Formal
    Partitioning
     Vertically       Written
                      Method

     4687            4 6 8 7
+    5749          + 5 7 4 9

     9000          1 0 4 3 6
     1300            1 1 1
        120
          16

    10436
Subtracting
                       Subtraction by adding on.

      502 - 198 = 304
                                         502
      +2    +300       +2              - 198

                                            2      (to 200)

198        200   500        502
                                         300       (to 500)
                                            2      (to 502)

                                         304
                         Subtraction by adding on.

      613 - 279 = 334
                                           613
      +1     +20     +300 +13            - 279

                                             1       (to 280)
                                            20       (to 300)
279        280     300     600   613
                                           300       (to 600)
                                            13       (to 613)
                                           334
                    Subtraction by adding on.

      846 - 458 = 388
                                      846
      +42 +300   +46                - 458

                                       42       (to 500)
                                      300       (to 800)
458     500   800      846
                                       46       (to 846)
                                      388
                    Subtraction by adding on.

  2645 - 898= 1746
                                       2645
      +2    +100 +1000     +645       - 898

                                          2      (to 900)
                                        100     (to 1000)
898        900   1000   2000   2645
                                       1000     (to 2000)
                                        645     (to 2645)
                                       1746
                 Subtraction by adding on.

  3567 - 742= 2825
                                    3567
      +58 +200 +2000    +567       - 742

                                      58      (to 800)
                                     200     (to 1000)
742     800   1000   3000   3567
                                    2000     (to 3000)
                                     567     (to 3567)
                                    2825
               Subtraction by adding on.

  3879 - 1352 = 2525
                                   3879
   +48 +600 +1000     +879       - 1352

                                    48     (to 1400)
                                   600     (to 2000)
1352   1400 2000   3000   3879
                                  1000     (to 3000)
                                   879     (to 3879)
                                  2525
                                  1 11
               Subtraction by adding on.

  6457 - 2469 = 3988
                                   6457
   +31 +500 +3000     +457       - 2469

                                    31     (to 2500)
                                   500     (to 3000)
2469   2500 3000   6000   6457
                                  3000     (to 6000)
                                   457     (to 6457)
                                  3988
                  Subtraction by adding on.

                     5021 - 1989            = 3032


       +1   +10     +1000    +1000      +1000          +20      +1




1989    1990 2000         3000       4000       5000         5020    5021




                     Th          H      T       U
                    3000                30       2
Subtraction by adding on vertically



             6008
           - 2997
                 3       (3000)
             3000        (6000)
                  8      (6008)
             3011
Subtraction by adding on vertically



           5003
         - 1989
               11       (2000)
           3000         (5000)
                3       (6008)
            3014
 5 2 3 9
-1 5 6 7
       3   (1570)
     3 0   (1600)
   4 0 0   (2000)
 3 2 3 9   (5239)
 3 6 5 3
     1
   1
4 1 1
 5 2 3 9
-1 5 6 7
 3 6 7 2
Adding Decimals
                        Formal
    Partitioning
     Vertically         Written
                        Method

     65.4
+    39.3               65.4
          .7       +    39.3
     14.0              10 4. 7
     90.0               1

    104.7
                       Formal
    Partitioning
     Vertically        Written
                       Method

     28.7
+    39.3              28.7
        1.0        +   39.3
     17.0              5 8.0
     50.0              1 1

     68.0
                       Formal
    Partitioning
     Vertically        Written
                       Method

     28.7
+    47.8              28.7
        1.5        +   47.8
     15.0              7 6.5
     60.0              1 1

     76.5
                       Formal
    Partitioning
     Vertically        Written
                       Method

     28.7
                        28.7
     47.8
                        47.8
+    53.6
                   +    53.6
          2.1          13 0.1
     18.0
                        2 2
    110.0

    1 3 0.1
      1
Adding by Partitioning Vertically



             3.12
        +    2.32

               .04
               .40
             5.00
             5.44
                       Formal
    Partitioning
     Vertically        Written
                       Method

     5.91
+    1.86              5.91
        .07        +   1.86
      1.70             7.7 7
      6.00              1

      7.77
    Partitioning       Formal
     Vertically        Written
                       Method

     3.89
     4.37
                        3.89
+    2.56
                        4.37
        .22        +    2.56
     1.60              10.8 2
     9.00
                        12
    10.82
Subtracting Decimals
                        Decimals




0   0.1   0.2   0.3   0.4   0.5    0.6   0.7   0.8   0.9   1.0
                  Subtraction by adding on.

      24.3 - 7.9 = 16.4
                                   24.3
  +0.1    +2.0   +10.0 +4.3       - 7.9

                                    0.1        (to 8.0)
                                    2.0       (to 10.0)
7.9      8.0   10.0   20.0 24.3
                                   10.0       (to 20.0)
                                    4.3       (to 24.3)
                                   16 .4
                  Subtraction by adding on.

      36.8 - 8.7 = 28.1
                                   36.8
  +0.3    +1.0   +20.0 +6.8       - 8.7

                                    0.3        (to 9.0)
                                    1.0       (to 10.0)
8.7      9.0   10.0   30.0 36.8
                                   20.0       (to 30.0)
                                    6.8       (to 36.8)
                                   28 .1
                                    1
                 Subtraction by adding on.

   42.8 - 19.3 = 23.5
                                   42.8
   +0.7 +10.0 +10.0 +2.8         - 19.3

                                   0.7       (to 20.0)
                                  10.0       (to 30.0)
19.3   20.0   30.0   40.0 42.8
                                  10.0       (to 40.0)
                                   2.8       (to 42.8)
                                  23 .5
                                   1
                  Subtraction by adding on.

   56.9 - 23.6 = 33.3
                                    56.9
   +0.4   +6.0   +20.0 +6.9       - 23.6

                                    0.4       (to 24.0)
                                    6.0       (to 30.0)
23.6   24.0   30.0   50.0 56.9
                                   20.0       (to 50.0)
                                    6.9       (to 56.9)
                                   33 .3
                                  11
                        Decimals




0   0.1   0.2   0.3   0.4   0.5    0.6   0.7   0.8   0.9   1.0
                       Subtraction by adding on.

 £7.85 - £3.49             = £4.36
                                        £7.85
 +0.51    +3.0     +0.85              - £3.49

                                         0.51      (to £4.00)
                                         3.00      (to £7.00)
3.49     4.0     7.0     7.85
                                         0.85      (to £7.85)
                                        £4.3 6
                                         1
                       Subtraction by adding on.

 £9.63 - £5.28             = £4.35
                                        £9.63
 +0.72    +3.0     +0.63              - £5.28

                                         0.72      (to £6.00)
                                         3.00      (to £9.00)
5.28     6.0     9.0     9.63
                                         0.63      (to £9.63)
                                        £4.3 5
                                         1
                  Subtraction by adding on.

£12.51 - £7.83 = £4.68
                                 £12.51
 +0.17    +4.0   +0.51          - £7.83

                                    0.17       (to £8.00)
                                    4.00      (to £12.00)
7.83     8.0   12.0   12.51
                                    0.51      (to £12.51)
                                   £4.6 8
                    Subtraction by adding on.

£23.94 - £17.62 = £6.32
                                       £23.94
  +0.38     +2.0    +3.0 +0.94       - £17.62

                                        0.38    (to £18.0)
                                        2.00    (to £20.0)
17.62     18.0   20.0   23.0 23.94
                                        3.00    (to £23.0)
                                        0.94    (to £23.94)
                                       £6.3 2
                                        11
                    Subtraction by adding on.

£35.12 - £27.59 = £7.53
                                       £35.12
  +0.41     +2.0    +5.0 +0.12       - £27.59

                                        0.41    (to £28.00)
                                        2.00    (to £30.00)
27.59     28.0   30.0   35.0 23.94
                                        5.00    (to £35.00)
                                        0.12    (to £35.12)
                                       £7.5 3

								
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