25
Module 4 …continued
Module 4…continued
Using Formulas - Temperature
To change Celsius to Fahrenheit:
To change Fahrenheit to Celsius:
325
9 CF oo
9
532 FC oo
Measurement Applications
Rule: You should know how to estimate the size of the units of an object.
Which is smallest/largest?
a. Choose the smallest measure:0.2m 0.02km 200cm
b. Choose the largest measure:30g 3000mg 0.3kg
Rule: Convert the given into the same unit.
Word Problems
a. Sameer went shopping and bought 4.1 kg of oranges, 350 g of flour, and 550 g of rice. What is the total weight of the items in grams?
Word Problems
b. Julie wants to bake 6 cakes. Each cake needs 450 ml of water. How many litres of water will she need?
Word Problems
c. The temperature was 37 0C. It falls by 35 0F.
What is the new temperature?
Word Problems
d. Khawla has 15 m of dress material. She cuts it into 4 equal pieces. How many centimeters is each piece?
Two – Dimensional Shapes2 D
Two – Dimensional Shapes
Square
4 sides
90 angle
each side equal
Two – Dimensional Shapes
Rectangle
Triangle
Two – Dimensional Shapes
Two – Dimensional Shapes
Circle
Two – Dimensional Shapes
Pentagon(5 sided)
Two – Dimensional Shapes
Hexagon(6 sided)
Two – Dimensional Shapes
Octagon(8 sided)
S or s for SideL or l for length
W or w for WidthB or b for base
H or h for HeightC or c for Circumference
R or r for RadiusD or d for Diameter
Dimensions
Perimeter (P)
The distance around the outside of a shape
Perimeter (P)
Triangle:
Side 1Side 2
Side 3
P = add all sides
P = side 1 + side 2 + side 3
Perimeter (P)
Square:
Side (S)
P = 4 x SSide (S)
Side (S)
Side (S)
Perimeter (P)Rectangle:
Length (L)
Width (W)
P = 2 x (L + W)
P = (L + L) + (W + W)
Circle
radius (r)
Circumference (c) = 2 x x r where = 3.14
Circle
diameter (d)
diameter = 2 r
C = d where = 3.14
AreaThe amount of surface of a region
AreaShape Dimensions Formula
length, width L x W
length = width s x s = s2
radius or diameter r2
base, height bh2
1h
b
