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Math K-Plus

Arithmetic - Subtraction Lessons And Calculators For First Grade, Second Grade, Third Grade, and Fourth Grade

SECOND GRADE EXAMPLE: SUBTRACT TWO NUMBERS




Problem: Subtract a negative integer from a positive one.



  +60
-  49
—————


   60
-  49
—————



We must borrow to continue solving this problem.
Subtract number in line 2 column 1
from line 1 column 1 including carry.
Column difference is (10 - 9) = 1.
Borrowed from column 2.
Move difference to answer line.



   |5|10
   60
-  49
—————
    1


We must borrow to continue solving this problem.
Subtract number in line 2 column 2
from line 1 column 2 including carry.
Column difference is (5 - 4) = 1.
Move difference to answer line.



   |5|10
   60
-  49
—————
   11

Problem Answer.



   60
-  49
—————
  +11