Adding & Subtracting Decimals Word Problems

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

What is the importance of place value in decimals?

Back

Place value in decimals indicates the value of each digit based on its position relative to the decimal point. For example, in 2.56, the 5 is in the tenths place and the 6 is in the hundredths place.

Tags

CCSS.5.NBT.A.3A

Front

If Josh had $15.00 and spent $8.50, how much does he have left?

Back

$15.00 - $8.50 = $6.50.

Tags

CCSS.6.NS.B.3

Front

If Scott had $12.58 and spent $2.26 on apples and $1.76 on juice, how much does he have left?

Back

$12.58 - ($2.26 + $1.76) = $12.58 - $4.02 = $8.56.

Tags

CCSS.7.NS.A.3

Front

How do you calculate the total cost of multiple items?

Back

To calculate the total cost, add the prices of all items together. For example, if you buy 2 notebooks for $3.15 each and a backpack for $12.40, the total cost is (2 x $3.15) + $12.40.

Tags

CCSS.7.EE.B.3

Front

What is the total cost if Kelly bought 2 notebooks for $3.15 each and a backpack for $12.40?

Back

Total cost = (2 x $3.15) + $12.40 = $6.30 + $12.40 = $18.70.

Tags

CCSS.7.NS.A.3

Front

If Jane has $40.00 and buys two shirts costing $19.49 and $12.99, how much money does she have left?

Back

Total spent = $19.49 + $12.99 = $32.48. Money left = $40.00 - $32.48 = $7.52.

Tags

CCSS.6.NS.B.3

Front

If Maya spent $32.78 and paid with $40.00, how much change should she receive?

Back

Change = $40.00 - $32.78 = $7.22.

Tags

CCSS.6.NS.B.3