Download Unit 1: multiplication(x): Repeat Example: * 5 x 2 = 2 x 5 = (2 + 2 + 2

Port Said International Schools – National Section
Summary on unit (1,2)
Better education for future generations
And solids
Name :____________________________________________
Unit 1:
multiplication(x):
Example:
Date :
Grade:3
Repeat
* 5 x 2 = 2 x 5 = (2 + 2 + 2 + 2 + 2 )
= (5+5)
*1 x any number = the number
7x1= 1x7 = 7
*0 x any number = zero
0x7=7x0=0
Division (÷):
Distribute
x
x
x
( a ) ÷ ( b ) = ( c)
(a) = (b) x (c) Example ( ) ÷ 9 = 9 81 ÷ ( ) = 9
zero ÷ any number = zero
To get the first number (a) multiply the next two numbers (b) x (c)
To get the second or the third number (b) or (c) ask myself what multiply (b) or ( c)
give me the first number (a)
Unit 2: Thousands and Ten Thousands
Place value ( Home) ten thousands , thousands , hundreds , tens , units
Value (number with zeroes) ten thousands (0000) , thousands (000) ,
Hundreds (00) , tens (0) , units (without zero)
Expanded form: 34560 = 30000 + 4000 + 500 + 60 + 0
=3ten thousand+4thousands+5hundreds+6tens+0units
34560 = 34 000 + 560
or
78009 = 78 000 + 9
(50000)
+ (330)
*5 ten thousands + 33tens = 50 330
* 59000 = 590 hundreds
Write the number in letters:
thousands(,) hundreds
First put (,) then read
40,706 is written as
forty thousands seven hundreds and six
Write the number in digits: first write( tth th h t u) then write each
number under each place value
( 4 0 7 0 6)
40706
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Math Department
Page 1 of 3
Unit 4: lesson (1) Solids
vertex
face
Edge
base
The cube has (6) faces, (8) Vertices and (12) edges and the base in the form of square
The cuboid has (6) faces, (8) Vertices, (12) edges and the base
in the form of rectangle
The triangular prism has(5) faces , (2)bases(6) Vertices, (9) edges
and the base in the form triangle
The triangular pyramid has (4) faces , (1) base (4)Vertices, (6)edges
and the base in the form of triangle
The squared pyramid has (5) faces , (1) base (5) Vertices, (8)edges
and the base in the form of square
The sphere has no faces , no base no Vertices and no edges.
The cone has (1) bases (1)Vertex ,no edges.
The cylinder has (2) bases no Vertex, no edges
and the base in the form of circle.
The solid which has two triangular bases ( triangular prism)
The solid which has two circular bases
(cylinder)
The solid which has one circular base and one vertex (cone)
The solid which has 6 faces and the base in the form of square
(cube)
The solid which has 6 faces and the base in the form of rectangle (cuboid)
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Math Department
Page 2 of 3
Lesson (2), (3):
Using a ruler to (measure or draw) a length of line segment:
Steps: 1. Put a ruler on the line segment if it is already drawn.
2. Put the ruler at 0 on the starting point.
3.Look at the ending point stopped on which number.
and that’s will be the length of the line segment.
Starting point
X
Y
ending point
XY= 10 cm
Mi
Lesson (4): Congruency:
Any figures that exactly the same.
Lesson (5): Pattern:
Ex: XY , XYY , XYYY , XYYYY , XYYYYY.
Lesson (6): The angle:
c
A
B
Name
<A
< BAC
<CAB
Vertex sides
A
AC
AB
The angle types:
Zero
Acute
Right
Obtuse
Straight
0< acute<90
0
90
90>obtuse<180
180
To measure the angle:
Steps: 1. Put the middle of the protractor on the vertex of
the angle . 2. Start measuring from 0 tell the end of the other side.
40
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Math Department
Page 3 of 3