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                                      2        8                                              3      4        8
                    (c)  700 + 4 +        +                          (d)  5000 + 80 + 5 +        +       +
                                     100     1000                                            10     100     1000
                                          7        8
                    (e)  4000 + 800 +         +
                                         100     1000

                    (f )  9 hundreds + 8 ones + 9 tenths + 3 hundredths
                    (g)  6 thousands + 8 tens + 3 ones + 9 thousandths


              like aND uNlike Decimals

              Like Decimals

              Decimals having the same number of decimal places are called like decimals.

              example:
                  (a)  0.9, 8.6, 11.5, 354.7 are like decimals as they have one decimal place.

                  (b)  0.47, 3.73, 21.40, 327.00 are like decimals as they have two decimal places.
                  (c)  8.109, 3.756, 92.480, 381.700 are like decimals as they have three decimal places.

              unlike Decimals

              Decimals having different number of decimal places are called unlike decimals.

              example: 0.64,  26.8  and  124.568  are unlike decimals  as  they have different  number  of
              decimal places.
              example 1:  Identify the different group of like decimals in the following:

                            0.05, 0.14, 12.1, 9.9, 2.145, 6.51, 2.294

              Solution:     0.05, 0.14, 6.51 have 2 decimal places.
                            So, it is a group of like decimals.

                            Similarly, 12.1 and 9.9 have 1 decimal place.

                            So, it is a group of like decimals.
                            Again, 2.145 and 2.294 have 3 decimal places.

                            So, it is another group of like decimals.
              converting unlike Decimals to like Decimals


              To convert unlike decimals to like decimals, follow the following steps:
              Step 1: Identify the decimal number having the largest number of decimal places.

              Step 2:  Add zeros  at the extreme  right of  the decimal  part  of  each remaining  decimal
                       number to make the equal number of digits in the decimal part.


               teacher’s   Explain to the children, with the help of examples, that the expanded form of any decimal number can also be
                  tip      expressed as a sum of whole numbers and decimal numbers as per their place values, like

                           32.759 = 30 + 2 + 0.7 + 0.05 + 0.009.


              Mathematics-5                                                                                         109
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