Right here we’ll study 2-digit numbers subtraction utilizing expanded kind.

Categorical every quantity in expanded kind, then subtract those and tens place.

Let’s attempt to clear up the next instance:

Subtraction of 2-Digit Numbers with Regrouping:

1. Subtract 45 from 72.

Resolution:

First we have to specific the quantity 45 and 72 in expanded kind.

Expanded type of 45

45 = 4 tens + 5 ones

and

Expanded type of 72

72 = 7 tens + 2 ones 

Now we subtract the expanded type of 72 and 45:

          72       =     7 tens  +   2 ones   =     6 tens   +  12 ones

        – 45       = –  4 tens   +  5 ones    = –  4 tens   +   5 ones

    Distinction  =                                         2 tens   +  7 ones     = 27

Subsequently, 72 – 45 = 27

Observe: Since in ones place 5 is bigger than 2 so, we regroup 7 tens + 2 ones to six tens 12 ones.

2. Subtract 29 from 57.

Resolution:

First we have to specific the quantity 29 and 57 in expanded kind.

Expanded type of 29

29 = 2 tens + 9 ones

and

Expanded type of 57

57 = 5 tens + 7 ones 

Now we subtract the expanded type of 57 and 29:

          57       =     5 tens  +   7 ones   =     4 tens   +  17 ones

        – 29       = –  2 tens   +  9 ones    = –  2 tens   +   9 ones

    Distinction  =                                         2 tens   +  8 ones      = 28

Subsequently, 57 – 29 = 28

Observe: Since in ones place 9 is bigger than 7 so, we regroup 5 tens + 7 ones to 4 tens 17 ones.

3. Subtract 35 from 81.

Resolution:

First we have to specific the quantity 35 and 81 in expanded kind.

Expanded type of 35

35 = 3 tens + 5 ones

and

Expanded type of 81

81 = 8 tens + 1 one

Now we subtract the expanded type of 81 and 35:

          81       =     8 tens  +   1 one     =     7 tens   +  11 ones

        – 35       = –  3 tens   +  5 ones    = –  3 tens   +   5 ones

    Distinction  =                                         4 tens   +   6 ones      = 46

Subsequently, 81 – 35 = 46

Observe: Since in ones place 5 is bigger than 1 so, we regroup 8 tens + 1 ones to 7 tens 11 ones.

2nd Grade Math Apply

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