Different Ways to Subtract Two Digit
Numbers
1.)
2 Column
Subtraction
EX)
48
-13
35
This first way is the more “traditional
way.” First start with subtracting the
digits in the ones column, 8-3=5. Next
continue subtracting with the tens
column, 4-1=3. By subtracting both
columns vertically, the answer is 35.
2.) Subtracting Two Digit Number by tens and
then ones
EX)
48-13=_____
48- 10 = 38
38 - 3 = 35
48-13= 35
Look at the two digits minus two digits
being subtracted. In the second
number, start with subtracting the tens
first. So, 48-10=38. Use the same
answer of 98 in the next row, and
subtract the remaining 3 ones to it. 4813= 35.
3.) Subtracting Two Digit Numbers by ones and
then tens
EX)
48- 13= ____
48-3= 45
45- 10= 35
45-10=35
Look at the two digits minus two digits
being subtracted. In the second
number, start with subtracting the ones
first. So, 48-3=45. Use the same answer
of 45 in the next row, and subtract the
remaining 1 ten. 45-10=35.
4.) Using Place Value on a Number Line to
Subtract Two Digit Numbers by tens and then ones
EX)
48-13= ______
20
30
40
50
I start at 48. I will subtract the digit in the tens place. So, 48-10= 38. I
will put my first number at 48 and my next number at 38. I will draw a
line to show my jump of -10. Then I will look at the remaining digit in
the ones place, which is 3. I will subtract 38-3=35. I will start on 38
and draw a backwards jump of minus 3 and land on 35. This is why
35 is the correct answer.
5.) Using Place Value on a Number Line to
Subtract Two Digit Number by ones and then tens
EX)
48-13= ______
20
30
40
50
I start at 48. I will subtract the digit in the ones place. So, 48-3=45. I
will put my first number at 48 and my next number at 45. I will draw a
line to show my jump of -3. Then I will look at the remaining digit in
the tens place, which is one ten. I will subtract 45-10=35. I will start on
45 and draw a backwards jump of minus 10 and land on 35. This is
why 35 is the correct answer.