Chapter 7 Decimals Worksheet - New Century Maths Page 4
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38Example 2
Write each of these decimals in expanded form:
a 604.75
b 29.04
Solution
a 604.75 = 6 × 100 + 0 × 10 + 4 × 1 + 7 ×
1
+ 5 ×
1
.
----- -
-------- -
10
100
b 29.04 = 2 × 10 + 9 × 1 + 0 ×
1
+ 4 ×
1
.
----- -
-------- -
10
100
Example 3
What is the place value of the digit 8 in the number 612.87?
Solution
8
The 8 in 612.87 is in the tenths column, so it has a value of 8 tenths (or
).
----- -
10
Example 4
Write in decimal form:
a 6 +
1
+
8
b 2 × 10 + 4 ×
1
----- -
-------- -
-------- -
10
100
100
Solution
a 6.18
b 20.04
Exercise 7-01
1 Copy this place-value table. Put the 12 given numbers in the table, with the digits in
Example 1
their correct columns.
hundreds
tens
units
tenths
hundredths
thousandths
a 14.82
b 6.014
c 931.02
d 70.8
e 297.86
f 11.14
g 503.92
h 8.3
i
0.375
j 200.047
k 4.025
l
0.81
2 Write each of the following (a to p) as a decimal:
a five and four-tenths
b six and fifteen-hundredths
c eleven and thirty-eight hundredths
d eight and three tenths
e fourteen and six-hundredths
f four hundred and two and three-thousandths
g 6 + 2 tenths + 3 hundredths
h 3 + 7 tenths
j 14 + 3 tenths + 9 hundredths
i
nineteen and nine-tenths
k 2 tens + 4 + 0 tenths + 9 hundredths
2 + 6 hundredths
l
m 8 + 7 tenths + 5 hundredths
n seventy-three hundredths
p 8 tenths + 5 hundredths + 9 thousandths
o nine-thousandths
201
DECIMALS
CHAPTER 7
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