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Computation Algorithms: Addition
 
Objective #1:Two-digit addend plus one-digit addend.

Example

Follow these steps to solve this problem:

  1. Add the tens (90+0).
  2. Write 90.
  3. Add the ones (5+9)
  4. Write 14.
  5. Add the partial sums (90+14).
  6. Write 114.
Directions: Enter the answer for each addition problem. Press tab or use the mouse to move to the next problem. When you are finished click the submit button.

1.

32
+7


2.

96
+8


3.

21
+2

           

4.

95
+7


5.

26
+9


6.

95
+8

           

7.

54
+1


8.

63
+3


9.

27
+4

           

10.

48
+8


11.

94
+3


12.

27
+9

           

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