Decimal Addition and Subtraction With 3 or More Numbers-alljchome-开发者的教程家园

Adding and Subtracting Decimals

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Decimal Addition and Subtraction With 3 or More Numbers

Problem 1:

Add 67.07 + 13.41 − 7.30 – 6.82

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

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

Decimal Addition and Subtraction With 3 or More Numbers