Mixed Math Review

Front

What is the result of multiplying a decimal by 100?

Back

To multiply a decimal by 100, move the decimal point two places to the right. For example, 7.129 × 100 = 712.9.

Front

What is the result of dividing a decimal by 10?

Back

To divide a decimal by 10, move the decimal point one place to the left. For example, 1.175 ÷ 10 = 0.1175.

Front

What is the result of dividing a decimal by 100?

Back

To divide a decimal by 100, move the decimal point two places to the left. For example, 6.3 ÷ 100 = 0.063.

Front

How do you calculate the total cost of services?

Back

Add the fixed charge to the product of the hourly rate and the number of hours worked. For example, Patricia charges $12 + ($5 × 2) for raking and bagging leaves.

Front

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

Back

Look at the digit in the tenths place. If it is 5 or more, round up. If it is less than 5, round down. For example, round 89.36 to 89.

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, representing a fraction of a whole. For example, 0.5 is a decimal.

Front

What does it mean to multiply by 10?

Back

Multiplying by 10 shifts the decimal point one place to the right. For example, 3.4 × 10 = 34.

Front

What does it mean to divide by 10?

Back

Dividing by 10 shifts the decimal point one place to the left. For example, 34 ÷ 10 = 3.4.

Front

What is the formula for calculating total cost when there are fixed and variable charges?

Back

Total Cost = Fixed Charge + (Variable Charge per Hour × Number of Hours).

Front

What is rounding?

Back

Rounding is the process of adjusting a number to a nearby value that is simpler or more convenient, often to the nearest whole number.