Decimal Addition and Subtraction With 3 or More Numbers

Problem 1

Add 67.07 + 13.41 7.30 6.82

Solution

Step 1:

We first add 67.07 + 13.41 = 80.48

Step 2:

Next we add the two negative decimals 7.30 + (6.82) = 14.12

Step 3:

Now 67.07 + 13.41 7.30 6.82 = 80.48 14.12 = 66.36

Step 4:

So 67.07 + 13.41 7.30 6.82 = 66.36

Problem 2

Add 89.03 + 19.15 8.60 7.92

Solution

Step 1:

We first add 89.03 + 19.15 = 108.18

Step 2:

Next we add the two negative decimals 8.60 + (7.92) = 16.52

Step 3:

Now 89.03 + 19.15 8.60 7.92 = 108.18 16.52 = 91.66

Step 4:

So 89.03 + 19.15 8.60 7.92 = 91.66