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

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. The acronym PEMDAS helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What operation should be performed first in the expression: 7 + 10 ÷ 5 • 8 - 3?

Back

10 ÷ 5 should be performed first.

Front

In the expression 5(3 + 9) - 10 ÷ 2 + 5, what does the parentheses indicate?

Back

Parentheses indicate that the operations inside them should be performed first.

Front

What is the result of simplifying the expression 2(4 + 6) ÷ 5 - 2 + 3?

Back

The result is 5.

Front

How do you estimate the product of two numbers?

Back

To estimate the product, round each number to a simpler value and then multiply.

Front

What is the estimated product of 8.7 and 7?

Back

The estimated product is 63.

Front

When rounding to the nearest tenth, what does it mean?

Back

Rounding to the nearest tenth means looking at the hundredths place; if it's 5 or more, round up, otherwise round down.

Front

Which decimal rounds to 97.5 when rounded to the nearest tenth?

Back

97.538 rounds to 97.5.

Front

What is a common mistake when applying the order of operations?

Back

A common mistake is performing addition or subtraction before multiplication or division.

Front

What is the result of 10 ÷ 2?

Back

The result is 5.