Unit 6 Dividing Decimals (Jan. SB)

Front

What is dividing decimals?

Back

Dividing decimals involves splitting a decimal number into equal parts. It is similar to dividing whole numbers but requires careful placement of the decimal point in the answer.

Front

How do you divide a decimal by a whole number?

Back

To divide a decimal by a whole number, move the decimal point in the dividend (the number being divided) to the right until it becomes a whole number. Then, divide as you would with whole numbers and place the decimal point in the quotient (the answer) directly above where it was in the dividend.

Front

What is the formula for calculating speed?

Back

Speed = Distance ÷ Time. This formula helps determine how fast an object is moving.

Front

If Gabriela hikes 3.72 miles at 1.2 miles per hour, how do you find the time taken?

Back

Time = Distance ÷ Speed. So, Time = 3.72 miles ÷ 1.2 miles/hour = 3.1 hours.

Front

How do you find the cost per gallon of gasoline?

Back

Cost per gallon = Total cost ÷ Number of gallons. For example, if 3.5 gallons cost $4.55, then Cost per gallon = $4.55 ÷ 3.5 = $1.30.

Front

What is the result of 14.28 ÷ 4.2?

Back

The result is 3.4.

Front

How do you calculate average speed for a trip?

Back

Average speed = Total distance ÷ Total time. For example, if a trip is 367.25 miles long and takes 5.75 hours, Average speed = 367.25 miles ÷ 5.75 hours = 63.87 miles/hour.

Front

What is the result of 65.52 ÷ 1.2?

Back

The result is 54.6.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting its value to make it simpler while keeping it close to the original value. For example, rounding 3.72 to one decimal place gives 3.7.