Unit Test Review

Front

What is expanded notation?

Back

Expanded notation is a way of writing numbers to show the value of each digit. For example, 4.321 can be written as 4 + 0.3 + 0.02 + 0.001.

Front

How do you divide decimals?

Back

To divide decimals, you can convert the divisor to a whole number by moving the decimal point to the right and do the same for the dividend. Then, perform the division as usual.

Front

What is the order of operations in math?

Back

The order of operations is a set of rules that tells you the sequence to follow when solving math problems: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

What does the term 'fraction' mean?

Back

A fraction represents a part of a whole. It consists of a numerator (the top number) and a denominator (the bottom number). For example, in 3/8, 3 is the part and 8 is the whole.

Front

How do you add fractions with the same denominator?

Back

To add fractions with the same denominator, simply add the numerators and keep the denominator the same. For example, 3/8 + 2/8 = (3+2)/8 = 5/8.

Front

What is the value of 6 + (4 × 2)?

Back

The value is 14. According to the order of operations, you first multiply 4 by 2 to get 8, then add 6.

Front

What is a decimal?

Back

A decimal is a way of representing numbers that are not whole. It uses a decimal point to separate the whole number part from the fractional part. For example, 0.75 is a decimal.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over 1 and multiply the numerator and denominator by 10 for every digit after the decimal point. For example, 0.75 = 75/100, which simplifies to 3/4.

Front

What does 'six and eighty-four hundredths' mean in decimal form?

Back

It means 6.84. The 'six' is the whole number part, and 'eighty-four hundredths' represents the decimal part.

Front

What is the result of 25.76 ÷ 16?

Back

The result is 1.61.