Topic 1 - All Decimal Operations & Mult/Div Fractions

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten. It is used to represent numbers that are not whole.

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.

Front

What is the process for multiplying decimals?

Back

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

Front

How do you divide decimals?

Back

To divide decimals, move the decimal point in the divisor to the right until it is a whole number, and move the decimal point in the dividend the same number of places. Then divide as usual.

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Front

How do you multiply fractions?

Back

To multiply fractions, multiply the numerators together and the denominators together. Simplify if possible.

Front

What is the process for dividing fractions?

Back

To divide fractions, multiply by the reciprocal of the divisor. Flip the second fraction and then multiply.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction, such as 2 1/2.

Front

How do you convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place that result over the original denominator.

Front

What is the least common multiple (LCM)?

Back

The least common multiple is the smallest multiple that two or more numbers share.