Are you ready to take this lesson's quiz? The questions below will help you find out. Make sure you understand why each correct answer is correct—if you don't, review that part of the lesson.
What is the place value of the 3 in the number 756.308?
- Hundreds
- Tens
- Ones
- Tenths
The hundreds place is the third place to the left of the decimal point. In this number, it is where the 7 is.
The tens place is the second place to the left of the decimal point. In this number, it is where the 5 is.
The ones place is the first place to the left of the decimal point. In this number, it is where the 6 is.
The tenths place is the first place to the right of the decimal.
Which is the first step in comparing two decimals?
- Look at the digits in each decimal place to find a difference.
- Align the numbers being compared.
- Decide which digit is greater.
- Order the numbers from least to greatest.
This step is important but is not the first step in comparing decimals.
Start by aligning the numbers being compared to help you see where the differences are.
This is the step you take after finding which digits are different in the numbers you are comparing.
This step comes after you have compared the decimals you are working with.
This step comes after you have compared the decimals you are working with.
- 3.20, 3.22, 3.32
- 3.15, 3.05, 3.25
- 505.652; 505.561; 506.152
- 1,909.80; 1,908.90; 1,909.75
The number 3.20 is the least because the digit in the hundredths place is 0. The number 3.22 is next largest because the digit in the hundredths place is 2. The number 3.32 is the greatest because the digit in the tenths place is 3.
The number 3.15 is greater than 3.05 because it has 1 tenth, and 3.05 has 0 tenths. These numbers are not ordered from least to greatest.
The number 505.561 is less than 505.652 because 505.561 has only 5 tenths, while 505.652 has 6 tenths. These numbers are not ordered from least to greatest.
The number 1,909.80 is the largest of this set. These numbers are not ordered from least to greatest.
Which shows the decimal number 75,815.359 written in word form?
- Seventy-five thousand eight hundred fifteen and three hundredths
- Seventy-five thousand eight hundred fifteen three hundred fifty-nine
- Seventy-five thousand eight hundred fifteen and three hundred fifty-nine thousandths.
- Seventy-five thousand and eight hundred fifteen and three hundred fifty-nine
You would write the decimal portion of this number as “three hundred fifty-nine thousandths.”
When reading a decimal, use the word “and” to indicate its placement.
Read the digits from left to right, using the word “and” to indicate the decimal point. Name the last decimal place that contains a digit, the thousandths.
The word “and” is used only when naming a decimal point. It should be placed only after fifteen.
Which number line correctly represents the decimals 0.525, 0.45, and 0.60?
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A horizontal number line with the values between 0 and 1 marked by 0.1. The numbers 0.45, 0.525, and 0.6 are each marked with a closed circle.
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A horizontal number line with the values between 0 and 1 marked by 0.1. The numbers 0.060, 0.405, and 0.552 are each marked with a closed circle.
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A horizontal number line with the values between 0 and 1 marked by 0.2. The numbers 0.006, 0.255, and 0.540 are each marked with a closed circle.
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A horizontal number line with the values between 0 and 1 marked by 0.1. The numbers 0.54, 0.205, and 0.660 are each marked with a closed circle.
This graph is correct. All the points are labeled and placed correctly.
Read your decimals carefully. Pay close attention to place value.
Read your decimals carefully.
Read your decimals carefully.
Summary
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