Adding and subtracting decimals
Prices and measurements almost always have decimals. The trick is to line up the decimal point and think of the places as cents.
About: Adding and subtracting decimals
Prices and measurements almost always have decimals. The trick is to line up the decimal point and think of the places as cents.
Worked examples
Calculate: 12.95 + 12.88
Answer: 25.83. Line up the decimal points, fill in zeros and operate as with whole numbers: 12.95 + 12.88 = 25.83.
Calculate: 45.13 + 26.31
Answer: 71.44. Line up the decimal points, fill in zeros and operate as with whole numbers: 45.13 + 26.31 = 71.44.
Calculate: 653.22 − 14
Answer: 639.22. Line up the decimal points, fill in zeros and operate as with whole numbers: 653.22 − 14 = 639.22.