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Page 70 - Math Genius C2
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    E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_04
                   \ 26-Sep-2025  Bharat Arora   Proof-10                                   Reader’s Sign _______________________ Date __________

                    Answer the following.

                    1.  Ajay chooses 15 daisy, 13 lily and 25 rose plants.
                        How many plants does he buy in all?                                              __________

                    2.  Madhu takes 18 hibiscus and 24 dahlia plants.

                        Find out how many plants she takes in all.                                       __________

                    3.  Who buys more plants and by how many?                                            __________

                  Addition of Bigger 2-digit numBers

                  Sometimes when we add two 2-digit numbers, we

                  get the sum as a 3-digit number. To understand this,
                  let us consider the following situation.

                  Ritika and Mansi are decorating their home with

                  garlands for Diwali celebrations.

                  Ritika uses 60 garlands and Mansi uses 50 garlands.

                  Ritika: How many garlands have we used altogether?

                  Mansi: To know the total, we need to add 60 and 50.                                             t    O
                                                                                                                  6    0
                  Ritika: Okay, let us add them step-wise by writing the numbers in                           +   5    0

                  columns.

                  Step 1. First, add the ones.                     Step 2. Next, add the tens and regroup.
                  0 + 0 = 0 ones                                   6 + 5 = 11 tens = 1 hundred + 1 ten

                  Write 0 in the ones place.                       (More than 9 tens, so regroup into hundreds and tens.)

                                  t   O                            Write 1 ten in the the tens column and carry
                                                                   over 1 hundred to the hundreds column.
                                  6    0
                              +   5    0                               H    t    O

                                       0                               1
                                                                            6    0
                                                                   +        5    0

                                                                       1    1    0

                  Thus, we get 60 + 50 = 110.

                  68                                                                                    Mathematics-2

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