Page 98 - Math Skill - 1
P. 98

96                                                                                                  Maths


                                                                      Fact-o-meter
                     T O                        T O                We  can  easily  add

                     6 5                        1 3                only tens by adding             T   O

                + 1 3                      + 2 4                   tens place and place            4   0
                                                                   a zero  at the ones        +    1   0
                                                                   place like:                     5   0



        Regrouping from Ones to Tens


        We can regroup 12 ones as 1 ten and 2 ones.



                                                    10 ones = 1 ten





                                                        12 ones
                           12 ones                                              1 ten           2 ones
                                                   = 1 ten + 2 ones


        Addition with Regrouping/Carry Over

        We have learnt the concept of tens and ones. Let's learn how to regroup
        and carry.


        Add 25 and 17.



                                           25                                                            T     O
        To add 25 and 17,                                                                                2     5

        regroup the numbers

        as Tens and Ones.                                                                         +      1     7
                                           17








                                                                                                         T     O
        First, add the ones.

        5 Ones + 7 Ones                                                                                  2     5

        = 12 Ones                                                                                 +      1     7

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