Question

What is 1.42 + 2.157=

Answer 1

The answer is 3.577.

Answer 2

Step 1. Step up long addition

   1 . 4 2 0
+ 2 . 1 5 7
_________

Step 2. Calculate 0 + 7, which is 7.

   1 . 4 2 0
+ 2 . 1 5 7
_________
              7
Step 3. Calculate 2 + 5, which is 7.

   1 . 4 2 0
+ 2 . 1 5 7
_________
           7 7

Step 4. Calculate 4 + 1, which is 5.

   1 . 4 2 0
+ 2 . 1 5 7
_________
         5 7 7

Step 5. Calculate 1 + 2, which is 3.

   1 . 4 2 0
+ 2 . 1 5 7
_________
   3 . 5 7 7

Step 6. Therefore, 1.42 + 2.157 = 3.577

3.577

Done!