5th Grade Math 1st Semester Review 01 - Non-Calculator Section

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler while keeping its value close to what it was. For example, rounding 864.756 to the nearest hundredth gives 864.76.

Front

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

Back

To round a number to the nearest whole number, look at the digit in the tenths place. If it is 5 or greater, round up. If it is less than 5, round down. For example, $96.93 rounds to $97.00.

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 is an error in following the order of operations?

Back

An error in following the order of operations occurs when the steps are not followed correctly, leading to an incorrect answer. For example, in Bob's problem, he made an error in Step 2 by not performing the division before the addition.

Front

What is the first operation to perform in the expression 7 + 10 ÷ 5 • 8 - 3?

Back

The first operation to perform is 10 ÷ 5, according to the order of operations.

Front

How do you estimate a product?

Back

To estimate a product, round the numbers to the nearest whole number and then multiply. For example, to estimate the product of 8.7 and 7, round 8.7 to 9, so 9 x 7 = 63.

Front

What is the value of 5(3 + 9) - 10 ÷ 2 + 5?

Back

The value is 10, following the order of operations correctly.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by performing operations and combining like terms.

Front

What is the result of rounding 864.756 to the nearest hundredth?

Back

The result is 864.76.

Front

What is the result of rounding $96.93 to the nearest whole number?

Back

The result is $97.00.