2. lesson 1 place value and value of w ns

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