2. lesson 1 place value and value of w ns
TRANSCRIPT
NUMBERS ARE EVERYWHERE!!!
Numbers in Politics
Numbers in Money
Numbers in School
Numbers in Nature
Numbers in Social Issues
Numbers in People
WHOLE NUMBERSUP TO
MILLIONS PLACEBy: Mr. John Rome R. Aranas
REVIEW OF CONCEPTS
• These are called DIGITS.
• They can be combined to form different numbers.
• Combined numbers are different in the sense that they have different values.
PLACE VALUE AND VALUE
• PLACE VALUE tells the POSITION of a number.*A group of 3 place values is called PERIOD• Combined numbers are different in the
sense that they have different values.
PLACE VALUE AND VALUE
ones
tens
hund
reds
thou
sand
s
mill
ions hund
red
thou
sand
ste
n th
ousa
nds
hund
red
mill
ions
ten
mill
ions
10 0
00 0
00
100
000
000
1 00
0 00
010
0 00
010
000
1 00
010
0 10
1
MILLIONS THOUSANDS
ONES
Examples
Give the place value and value of the underlined digit.
1) 235 4) 967 4752) 6 382 5) 452 736 4053) 59 325
Seatwork
WRITING WHOLE NUMBERS
3 Forms1)Symbol Form
a)Standard Formb)Expanded Form
2) Word Form3) Number Word Form
Symbol Form
a) Standard Form – the standard way of writing numbers
Ex. 26 302 or 26,302
Symbol Form
b) Expanded Form – extended way of writing numbers
- we use the values of each digit to write the numberEx. 26 302 = 20 000 + 6 000 + 300 + 2
Word Form
- Numbers are written by words.NOTES:a) Dual-digit numbers are ALWAYS written with a
dash (-) in between. (Nos. 21-99)b) Each period is SEPARATED by a COMMA (,).c) Each period end with period’s name.
Word Form
Sir Rome’s Tip:
“Write it as you read it”
Word Form
Let’s have an example: 26 302
Twenty-six THOUSAND, three hundred two
123 876
One hundred twenty-three THOUSAND, eight hundred seventy-six
Number Word Form
- A combination of standard and word form Ex. 26 302 = 26 thousand, 302
123 876 = 123 thousand, 876
Try These!!!
Write these numbers in expanded, word, and number word form.1) 43 8902) 780 2343) 7 902 4914) 29 030 285
Seatwork
Primary Mathematics 4, page 6 Nos. 1-3
Homework