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Guess the decimal

guess_decimal

Click on this image and good luck

Ordering decimals

Try with these three activities:

blog4         ordering_decimals    blog6    blog5

Decimals on the number line

Which positions are these numbers on the number line in?

Try with this activity:

blog2

Place value of decimals

Decimal numbers, such as 0.6495, have four digits after the decimal point.  Each digit is a different place value.

The first digit after the decimal point is called the tenths place value. There are six tenths in the number 0.6495.

The second digit tells you how many hundredths there are in the number.  The number 0.6495 has four hundredths.

The third digit is the thousandths place.

The fourth digit is the ten-thousandths place which is five in this example.

Therefore, there are six tenths, four hundredths, nine thousandths, and five ten-thousandths in the number 0.6495.

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As with whole numbers, a digit in a decimal number has a value which depends on the place of the digit. This table shows the decimal place value for various positions:

Note that adding extra zeros to the right of the last decimal digit does not change the value of the decimal number.

Place (underlined) Name of Position
1.234567 Units (ones) position
1.234567 Tenths
1.234567 Hundredths
1.234567 Thousandths
1.234567 Ten thousandths
1.234567 Hundred Thousandths
1.234567 Millionths

Example:

In the number 3.762, the 3 is in the units place, the 7 is in the tenths place, the 6 is in the hundredths place, and the 2 is in the thousandths place.

A decimal number may be larger than 1. The word and may be used to indicate the decimal point so it should not be used in other parts of the name of the decimal. The decimal 234.987 could be pronounced Two hundred thirty-four AND nine hundred eighty-seven thousandths. This number can also be pronounced Two hundred thirty four point nine hundred eighty-seven.

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