Somerville School, Noida
Mathematics Worksheet – 3 (2020-2021)
Class-3
Reading numbers beyond 999
We already know about places ones, tens and hundreds. They belong to the period ONES.
Places beyond hundreds are thousands and ten thousands .They belong to the period
THOUSANDS
PERIODS
THOUSANDS
ONES
TEN
PLACES
THOUSANDS
THOUSANDS
HUNDREDS
TENS
We use a comma to separate the ones period from the thousands period eg.
Th
H
T
O
NUMBER
2
1
4
5
2,145
ONES
NUMBER NAME
Two thousand one hundred forty five
REMEMBER- We do not write and in number names.
Ex.1 Write the number names of the followinga) 1,472 = ____________________________________________________________________
b) 4,690 = ____________________________________________________________________
c) 9,167 = ____________________________________________________________________
d) 7,354 = ____________________________________________________________________
e) 5,703 = ____________________________________________________________________
Ex.2 Write the numerals for the followingS.No
a)
b)
c)
d)
e)
f)
Number Name
Six thousand thirty nine
Two thousand three hundred eighty seven
Nine thousand ninety one
One thousand three hundred four
Five thousand nine
Four thousand seven hundred ten
Numeral
6039
Place Value and Face Value
Each digit of a number has a place value and a face value. The place value of a digit depends
on its place in the number . It can be obtained by multiplying the digit with its place. The
face value of a digit is simply the value of the digit irrespective of its position in the
number.eg.
Th
H
T
O
5
8
7
4
Face Value
Place Value
4
4X1=4
7
7 X 10=70
8
8 X 100=800
5
5X 1000= 5000
Ex.1 Write the face value, place and place value of the underlined digits –
Number
Face Value
Place
Place Value
a)
4637
6
hundreds
600
b)
8794
c)
6045
d)
9308
e)
7689
Expanded and Short Form of a Number
The expanded form of a number helps us to understand the value of each digit in the given
number. It can be written in words as well as in numbers. Let us take a few examples
1) 5437 can be written as
Th H
5 4
T
3
O
7
= 5000 + 400 + 30 + 7 (In numbers)
= 5 thousands + 4 hundreds + 3 tens + 7 ones (In words)
2) 9 1 3 5
Th H
9 1
T
3
O
5
= 9000 + 100 + 30 + 5
= 9 thousands + 1 hundred (not hundreds) + 3 tens + 5 ones
3) 7 0 2 3
Th H
7 0
T
2
O
3
= 7000 + 20 + 3
= 7 thousands + 2 tens + 3 Ones
Please note if the place value is 0 then it is not written in the expanded form .
Ex.1 Write the numbers in expanded form (both in numbers and in words) .The first one has
been done for you –
a)
9 8 8 3 = 9000 + 800 + 80 + 3
9 8 8 3 = 9 thousands + 8 hundreds + 8 tens + 3 ones
b)
6792=
c)
2705=
d)
8064 =
e)
139 6=
Short Form
Let us now understand writing numbers in the short form with the help of some examplesa. 3000 + 800 + 70 + 4 = 3874
b. 6000 + 40 + 9 = 6049 (There is no number at the hundreds place so we put a 0 there )
c. 7000 + 3 = 7003
Ex.2 Write in short form –
a)
b)
c)
d)
e)
9000 + 500 + 30 + 6 =
1000 + 900 + 40 + 7 =
6000 + 800 + 1 =
3000 + 100 + 10 + 3 =
2000 + 20 + 2 =