Unit One Flashcards
Operation
What is done to numbers to create an answer
Addition terms
Add, sun, total
Subtraction terms
Minus, difference, subtract, take away
Multiplication terms
Product, times, of
Division terms
Quotient, split in equal groups, fractions
Squaring
When a number is multiplied by itself. Symbol is a superscript “X*”
(Sub star with exponent)
The list
A number multiplied by itself. The squaring list of all possible squared numbers
Squaring with picture
The answer is also the area is the square. Two sides multiplied.
Perimeter
The outside of the square. Add up all sides to get a total
Area
Inside or the shape. Multiply length times width.
A square has an area of 49.
a) what is the side length
b) what is the perimeter
a) 7
b) 28
How do I know if a number is a perfect square???
- Check “The list”
- Trial and error
- Factor test: a number is a perfect square If it has an odd number of factors.
- Use an inverse operation. Square rooting
Measuring line segments
- Find the area of the large square (lxw)
- Find the area of the triangles
- Subtract large square minus triangles
- Square root the area of the small square
Estimating square roots
- Draw a number line that contains the perfect squares closest to your number
- Add in “Ticks”
- Add in second number line below that contains square roots
- Add “Ticks” to represent decimals “decimal ticks”
- Find your number on the top and drop down to square root
The Pythagorean theorem
Pythagorus developed the formula C=a+b* to help find side lengths in a right angle triangle. Can also be used to find out if the triangle is a right angle triangle
