Decimal Operations

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Tags

CCSS.6.NS.B.3

Front

How many decimal places are in the product of 0.2 and 0.8?

Back

There are 2 decimal places in the product of 0.2 and 0.8.

Tags

CCSS.6.NS.B.3

Front

What is the difference between two decimal numbers?

Back

The difference is found by subtracting one decimal number from another. For example, the difference between 20.00 and 16.87 is 3.13.

Tags

CCSS.5.NBT.B.7

Front

How do you find the total distance run if you have already run part of it?

Back

To find the total distance left to run, subtract the distance already run from the total distance. For example, 7.7 miles - 2.93 miles = 4.77 miles.

Tags

CCSS.5.NBT.B.7

Front

What is the process to calculate change from a purchase?

Back

To calculate change, subtract the total cost of the items from the amount given to the cashier. For example, $20.00 - ($12.39 + $3.27) = $4.34.

Tags

CCSS.6.NS.B.3

Front

How do you calculate the total distance traveled if you go around a track multiple times?

Back

Multiply the length of the track by the number of times you go around. For example, 8.54 miles x 4 = 34.16 miles.

Tags

CCSS.7.EE.B.3

Front

What is the value of 0.5 + 0.25?

Back

0.5 + 0.25 = 0.75.

Tags

CCSS.5.NBT.B.7

Front

What is the value of 1.5 - 0.75?

Back

1.5 - 0.75 = 0.75.

Tags

CCSS.5.NBT.B.7

Front

How do you round a decimal to the nearest whole number?

Back

To round a decimal to the nearest whole number, look at the digit to the right of the decimal point. If it is 5 or greater, round up; if it is less than 5, round down.

Tags

CCSS.5.NBT.A.4