Math Review

What is the cost per pound of nails if Harold had four pounds that cost $22.68?

• $4.50

• $5.67

• $6.75

• $5.00

What is the significance of parentheses in mathematical expressions?

• They indicate which operations should be performed first in an expression, following the order of operations.

• They are used to group numbers for addition only.

• They serve as a way to denote multiplication in expressions.

• They are only necessary in complex equations.

How do you evaluate a complex expression with multiple operations?

• Solve expressions in parentheses first, then perform addition and subtraction from left to right, followed by multiplication and division.

• Follow the order of operations: solve expressions in parentheses first, then perform multiplication and division from left to right, followed by addition and subtraction.

• Perform all operations from left to right without any specific order.

• Evaluate the expression by starting with the highest number and working downwards.

How do you identify prime numbers from a list?

• Check if the number is even or odd.

• Check if the number has exactly two distinct positive divisors: 1 and itself.

• Check if the number is greater than 10.

• Check if the number is a multiple of 5.

How do you evaluate the expression 315.03 - (2.003 + 4.1) + 211.09?

• 510.017

• 520.017

• 530.017

• 500.017

What is the value of 5.2 + 54?

• 58.2

• 59.0

• 59.2

• 60.2

What defines a prime number?

• A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

• A prime number is any integer that is divisible by 2.

• A prime number is a natural number that is less than 1.

• A prime number is a number that can be expressed as the sum of two other prime numbers.

How do you solve the expression [ 5.2 + (22 - 4) x 3] ÷ 8?

• 7.0

• 7.4

• 8.2

• 6.8

What is expanded notation?

• A method to write numbers showing the value of each digit, e.g., (5 x 1) + (4 x 0.1) + (8 x 0.01)

• A way to convert fractions into decimals

• A technique for rounding numbers to the nearest whole number

• A system for writing numbers in binary format

How do you convert a decimal to expanded notation?

• Break it down into its place values, for example, 3.76 = (3 x 1) + (7 x 0.1) + (6 x 0.01).

• Multiply the decimal by 10 for each digit after the decimal point.

• Add the digits together to get the decimal value.

• Convert the decimal to a fraction and simplify.