33 is a whole number. 3.3 is a decimal number.

Decimal Numbers (Easy)

Decimal numbers have a dot or point. This is the first 11-plus Maths quiz on decimal numbers: these are numbers that are not whole numbers, e.g. '5' is a whole number BUT '5.5' is not a whole number: 5.5 = 5 + 0.5. The '.' (dot) is called the decimal point and the numbers to the right of the decimal point (dp) form the decimal part of the number. Here's a handy tip:

• The first number to the right of the dp is in the tenths place position, e.g. 5 in 3.5
• The second number to the right of the dp is in the hundredths place position, e.g. 4 in 3.54
• The third number to the right of the dp is in the thousandths place position, e.g. 7 in 3.547

To get a feel for decimal numbers, play these ten questions and see how you do before moving onto the next one.

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1. What are the place positions of the numbers in the decimal parts of the numbers given?
18.895
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 5 in 7.5
The second number to the right of the dp is in the hundredths place position, e.g. 4 in 7.54
The third number to the right of the dp is in the thousandths place position, e.g. 9 in 7.549
2. What are the place positions of the numbers in the decimal parts of the numbers given?
0.246
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 2 in 4.2
The second number to the right of the dp is in the hundredths place position, e.g. 9 in 4.29
The third number to the right of the dp is in the thousandths place position, e.g. 8 in 4.298
3. What are the place positions of the numbers in the decimal parts of the numbers given?
56.407
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 6 in 1.6
The second number to the right of the dp is in the hundredths place position, e.g. 2 in 1.62
The third number to the right of the dp is in the thousandths place position, e.g. 9 in 1.629
4. What are the place positions of the numbers in the decimal parts of the numbers given?
23.010
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 1 in 9.1
The second number to the right of the dp is in the hundredths place position, e.g. 5 in 9.15
The third number to the right of the dp is in the thousandths place position, e.g. 4 in 9.154
5. What are the place positions of the numbers in the decimal parts of the numbers given?
124.987
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 9 in 5.9
The second number to the right of the dp is in the hundredths place position, e.g. 4 in 5.94
The third number to the right of the dp is in the thousandths place position, e.g. 7 in 5.947
6. What are the place positions of the numbers in the decimal parts of the numbers given?
12.056
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 1 in 8.1
The second number to the right of the dp is in the hundredths place position, e.g. 7 in 8.17
The third number to the right of the dp is in the thousandths place position, e.g. 6 in 8.176
7. What are the place positions of the numbers in the decimal parts of the numbers given?
1.970
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 8 in 7.8
The second number to the right of the dp is in the hundredths place position, e.g. 6 in 7.86
The third number to the right of the dp is in the thousandths place position, e.g. 3 in 7.863
8. What are the place positions of the numbers in the decimal parts of the numbers given?
11.186
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 2 in 3.2
The second number to the right of the dp is in the hundredths place position, e.g. 1 in 3.21
The third number to the right of the dp is in the thousandths place position, e.g. 8 in 3.218
9. What are the place positions of the numbers in the decimal parts of the numbers given?
0.001
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 8 in 2.8
The second number to the right of the dp is in the hundredths place position, e.g. 9 in 2.89
The third number to the right of the dp is in the thousandths place position, e.g. 1 in 2.891
10. What are the place positions of the numbers in the decimal parts of the numbers given?
2.34
TIP:
The first number to the right of the dp is in the tenths place position, e.g. 5 in 3.5
The second number to the right of the dp is in the hundredths place position, e.g. 4 in 3.54
The third number to the right of the dp is in the thousandths place position, e.g. 7 in 3.547

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