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    E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_03
                   \ 26-Sep-2025  Bharat Arora   Proof-10                                   Reader’s Sign _______________________ Date __________

     Step 2.  Subtract the tens.  t  O  maths fun                                                                Art Integration

     4 tens are left.  4  12  Subtract the ones first,   Which vehicle is used to travel into space? _______________
     then subtract the tens.
     So, 4 – 3 = 1 ten  5  2  To find the answer, solve the problems  and  colour each  segment  according to the

     Write 1 in the tens column.  –  3  6  given colour code.
     1  6
     Thus, 52 – 36 = 16.                                                                  90 – 1 =
     Think Tank  Critical Thinking                                  89 – 15 =
     example 2: Find: (a) 82 – 48  (b)  71 – 59      74 – 6 =                                      55 – 48 =
     1.  What is 3 tens less
     Solution: (a)    t  O  (b)   t  O  than 70 ones?  30 – 15 =                              70

     7  12  6  11  2.  What is the number just   70 – 4 =              69 – 2 =             – 40
     after 95 – 52?
     8  2  7  1                                                                                               68 – 1 =
     –  4  8  –  5  9  Math Insight                   81 – 8 =                   26 – 16 =

     3  4  1  2  In subtraction, we always
     write  the greater number                                                   64 – 54 =              73 – 6 =
           Thus, 82 – 48 = 34.     Thus, 71 – 59 = 12. on top and  the smaller   96 – 25 =
     number below it.                                72 – 36 =
     Practice Time 3C                                               74 – 68 =                 81 – 5 =

     1.  Find the difference.         76 – 6 =                                            76 – 10 =

     (a)  t  O  (b)  t  O  (c)  t  O  (d)  t  O        91 – 65 =           99 – 65 =          85 – 12 =
                                      85 – 18 =

     4  5  3  0  2  7  4  0                                                                82 – 8 =
     –  8  –  4  –  9  –  5                                83 – 9 =            90 – 17 =              91 – 9 =
                                          17 – 7 =                                              77 – 10 =

     2.  Subtract the following.                93 – 30 =                      71 – 14 =

     (a)  t  O  (b)  t  O  (c)  t  O  (d)  t  O                  82 – 24 =                      65 – 5 =

                                                                    Colour Code
     6  0  6  1  4  0  9  0  Answer Less than 10  10 Between 10 and 30 From 30 to 50 Between 50 and 65          Above 65
     –  2  5  –  4  4  –  1  8  –  2  1  Colour  Blue  Red   Yellow            Gray             Brown             Black

     (e)  t  O  (f)  t  O  (g)  t  O  (h)  t  O  Challenge Question                                              Critical Thinking

                      1.  What numerical values of           and       make the picture statements true?
     2  5  5  1  5  2  7  2       +     = 22 and        –       = 5. So,      = _______ and         = _______

     –  1  6  –  1  7  –  2  8  –  2  4  2.  I am an odd number. If you subtract me from 19, the result is greater than 16.

                           Who am I? __________

                  Mathematics-2                                                                                          59

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