Algebra and Equations Flashcards
Simplify:
3 x A x 5 x Y
15AY
3 x 5 = 15 then add A and Y
Write in expanded form:
4Y
y + y + y + y
4 x Y is the same as four Y’s
If a = 4 and b = 1, evaluate:
2a + b
9
2 x 4 = 8
+ 1 = 9
What are the three transformations that can occur when a shape is moved?
Translation ( sliding )
Reflection ( mirror image - flipped )
Rotating ( rotated - turned )
What is symmetry?
When you are able to fold the shape in half and it still be equal on all sides.
Rotational symmetry is…
when a shape or figure can be rotated about a point so that it maps onto itself at least once before one full revolution (360 degrees)
Triangle key words:
scalene, isosceles, equilateral
Angles:
obtuse, acute, right, straight, reflex, Revolution
What is the angle sum of a triangle?
180 degrees
What is the angle sum of a quadrilateral?
360 degrees
How to remember angle sum between quadrilateral and triangle:
Triangle is a smaller word than quadrilateral, therefore the angle sum is smaller.
Triangle angle sum = 180 degrees
Quadrilateral angle sum = 360 degrees
Define quadrilateral.
A quadrilateral is any shape with four sides. Pretty much an irregular square.
Name some quadrilateral examples.
trapezium kite parallelogram rhombus rectangle square
Arrange in descending order (big to small) :
- 3
- 03
- 33
- 003
2.33, 2.3, 2.03, 2.003
5.78 + 0.09
5.87
5 . 7 8
0 . 0 9
——–
5 . 8 7
2.573 - 1.9
2 . 5 7 3
1 . 9 0 0
————
0 . 6 7 3
0.7878787878787878787878…
.
0.78
OR
__
0.78
“do da bar do da bar do da bar”
Round to 3 decimal points:
23.4655902
23.466
Round to 7 decimal places.
8.73692736819270
8.7369274
How ma y centimetres in 55 millimetres?
5.5
What is perimeter and area?
Perimeter: distance around a shape
Area: area in a shape
Simply the expression:
X x 6
6X
just take away the times symbol
