Math- Grade 4/5 Math Review

area

The number of square units required to cover a surface. Area= l x w Multiply the length times the width. 4x5=20 Area=20

fraction

How many parts out of the whole. Example: 2/4 of the circle is shaded.

median

Median is the MIDDLE number

perimeter

the distance around the outside of a shape. Perimeter= side + side + side + side. ADD up all of the sides to find the perimeter.

probability

A number that measures the likelihood of an event happening in the future

mean

The MEAN is the AVERAGE. You add up all of the numbers. then you divide it by how many numbers.

parallel lines

lines that NEVER intersect. Lines that DO NOT cross over each other.

parallelogram

A quadrilateral with two pairs of parallel sides

rectangle

A quadrilateral with 4 sides and 4 right angles

denominator

The bottom number in a fraction
The number that means how many pieces there are TOTAL. Ex) 3 is the denominator

percent

%
Tells you how much out of a 100.

decimal

A number with one or more digits to the right of the decimal point

product

The answer to a multiplication problem

mode

The number that occurs the MOST from a list.

sum

SUM= ADD. The sum is the answer when you add.

pentagon

5 sides

range

The difference between the highest and lowest numbers. Subtract the smallest number from the largest number.

tenth place

The place value one place to the right of a decimal.

tens place

the second digit in a whole number

multiple

factor

The whole numbers that are multiplied to get a product or answer. ex) 2 x 6 are factors that multiply to get 12.

prime number

A number that only has two factors, 1 and itself. ex) 5 is prime because it only has 5x1=5

square

4 sides that are equal length. All four corners are 90 degree angles.

rectangle

A parallelogram with four right angles

How many degrees does a right angle have?

an angle that measures 90 degrees

rhombus

A parallelogram with four equal sides

pyramid

A solid shape with a polygon as a base and triangular faces that come to a point (vertex or apex)

cube

6 faces

triangle

A polygon with three sides.

isosceles triangle

A triangle that has 2 equal sides.

equilateral triangle

A triangle that has 3 equal sides.

Round 137 to the nearest tens.

140

Round 137 to the nearest hundred.

100

Round 1,587 to the nearest hundred.

1,600

Ms. Theodora planted 80 flowers. Mary planted two times more than Theodora. How many flowers did Mary plant?

Mary planted 160 flowers. 80 x 2= 160

What is .84 written as a fraction?

84/100

What is .12 written as a fraction?

12/100

Which is more? 7/4 or 4/7

7/4 is more

What does 8/8 equal?

8/8 = 1! Anytime the numerator is the same as the denominator, it equals one whole!

John ate 3/8 of the pizza pie. Joe ate 1/8 of the pizza pie. How much did they both eat?

3/8 + 1/8 = 4/8

How many minutes is in 2 hours?

2 hours = 120 minutes.

What is 1/5 + 2/5?

3/5

How do you find the Perimeter?

You ADD up all of the sides.

How do you find the AREA?

Area= Length x Width MULTIPLY the sides.

What is the product of 10 x 76?

760

What is the product of 100 x 56?

560

What is the difference of 70-62?

8

What is 100 x 34?

3,400

What is 100 x 721?

72,100

What is 300 divided by 3?

100

What are the factor pairs of 25?

1 x 25 and 5 x5

Which number is PRIME? 4, 5, 6, 10

5 is the prime number

Which number is EVEN? 4,5,7,13

4 is the even number

What is 300,000+20,000+5,000+800+40+1 in Standard Form?

325,841

What is 600+10+3 in Standard Form?

613

90,000 + 100 = ?

90,100

90,000 + 50 = ?

90,050

Michael weighs 100 pounds. Sarah weighs 80 pounds. What is the total amount they both weigh?

180 pounds. 100+80=180