# Adding and Subtracting Decimals By Miss Setchell.

## Presentation on theme: "Adding and Subtracting Decimals By Miss Setchell."— Presentation transcript:

Adding and Subtracting Decimals By Miss Setchell

Review of Decimal Place Value 0.2 3 4 Tenths Hundredths Thousandths

Practice Hundredths 0.7 9 8

Practice 0.1 0 6 Thousandths

0.1 0 6 Practice Tenths

Review of Adding Whole Numbers 182 +376 27 +86 3,984 +2,827 3 58 1 5,11 1 11 681 1 1

Review of Subtracting Whole Numbers 456 - 188 95 - 26 9,237 - 5,338 68 9 2,96 112 389 11843 1 1 8 1

Adding Decimals 2.7 +8.6 311 1. 1.82 +3.76 585 1. 3.984 +2.827 1. 1 681 1 1

Subtracting Decimals 9.5 - 2.6 96 18. 4.56 - 1.88 682 143 1. 9.237 - 5.338 9. 2 389 11 1 8 1

Adding and Subtracting Money \$1.82 +\$3.76 585 1. \$ - When you add or subtract money, can your answer have more than 2 decimal places? No. So, when you add and subtract decimals, your answer should never have more decimal places than any of the numbers in the problem.

For Example: 2.56 + 9.02 = Whatever the answer turns out to be, we know that it will only have two decimal places because that is the most amount of decimal places in each number.

For Example: 2.569 + 9.021 = Whatever the answer turns out to be, we know that it will have exactly three decimal places because that is the most amount of decimal places in each number.

For Example: 9.02 + 2.457 = Whatever the answer turns out to be, we know that it will have three decimal places because that is the most amount of decimal places in each number.

Practice: 8.4 +0.8 29 1. 1.70 +6.83 538 1. 8.028 +1.938 6. 1 996

Practice: 7.0 - 3.9 13 16. 9.73 - 0.87 868 168 1. 7.763 - 6.027 6. 5 173 1