PPT: Decimals | Mathematics for Class 4 PDF Download

 Page 1


D E C I M A L S
Introduction and Application
Page 2


D E C I M A L S
Introduction and Application
Let us observe how tenths
are written as decimals.
One-tenth : 
1   = 0.1 which is read as zero point one
10
Page 3


D E C I M A L S
Introduction and Application
Let us observe how tenths
are written as decimals.
One-tenth : 
1   = 0.1 which is read as zero point one
10
9   = 0.9 which is read as zero point nine
2   = 0.2 which is read as zero point two
10
10
Two - Tenth
Nine - Tenth
Page 4


D E C I M A L S
Introduction and Application
Let us observe how tenths
are written as decimals.
One-tenth : 
1   = 0.1 which is read as zero point one
10
9   = 0.9 which is read as zero point nine
2   = 0.2 which is read as zero point two
10
10
Two - Tenth
Nine - Tenth
RULES FOR WRITING DECIMALS
If the denominator is 10, put a decimal point in the number in the numerator
after one digit from the right.
If the denominator is 100, put a decimal point in the number in the
numerator after two digits from the right.
If the denominator is 1000, put a decimal point in the number in the
numerator after three digits from the right.
Page 5


D E C I M A L S
Introduction and Application
Let us observe how tenths
are written as decimals.
One-tenth : 
1   = 0.1 which is read as zero point one
10
9   = 0.9 which is read as zero point nine
2   = 0.2 which is read as zero point two
10
10
Two - Tenth
Nine - Tenth
RULES FOR WRITING DECIMALS
If the denominator is 10, put a decimal point in the number in the numerator
after one digit from the right.
If the denominator is 100, put a decimal point in the number in the
numerator after two digits from the right.
If the denominator is 1000, put a decimal point in the number in the
numerator after three digits from the right.
READING DECIMALS
0.06 is read as six hundredths or zero point zero six.
0.43 is read as forty three hundredths or zero point
four three.
2.31 is read as two and thirty one hundredths or two
point three one.
32.47 is read as thirty two and forty one hundredths
or thirty two point four seven.