Page 57 - Maths Skill - 3
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Subtraction                                                                                             55








                                                      MIND MAP










                                                    Subtraction






                        “Subtraction means taking away a number from a given number”




                                                       It’s Symbol                     Recognising Words

                                                 It is denoted by ‘–’ sign             Subtract
                                                                                       Difference

                                                                                       Deduct
                    Process and Identity                                               Decrease

           Number (1) – Number (2) = Number (3)                                        Left
                                                                                       Remain
            Minuend       Subtrahend       Difference                                  Minus

                                                                                       Take away


                           Properties                                                Five

           1.  Number – 0 = Number                                                            9 – 4

           2.  Number – Number = 0
           3.  Number (1) – Number (2)                                                5          8 – 3
                                    ≠ Number (2) – Number (1)

           4.  Number – 1 = Predecessor                                    5 – 0              7 – 2

                                                                                     6 – 1
                        Verification

          Subtraction           Checking Answer                  Note
              4 5 3 2             1 9 0 9
            – 2 6 2 3          + 2 6 2 3                         In subtraction, the order of numbers is
                                                                 very important. We  always  subtract small
              1 9 0 9             4 5 3 2                        number from big number.
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