Math Terms for Fourth Grade
If you are going to be teaching math in the fourth grade, it is important to have an understanding of the different terms that you will come across. Fourth grade marks the time where basic math skills, such as addition, subtraction, multiplication and division are added upon to get a better understanding of more complex topics. These topics are important to learn as a foundation of math skills.
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Decimals
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A decimal is defined as a proper fraction whose denominator is a power of 10. A decimal is a real number in between two whole numbers. For example, 11.45 is a decimal and is a number in between 11 and 12.
Fractions
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A fraction is a part of a whole. It is considered an expression that shows the quotient of two quantities. For example, 1/3 is a fraction and represents one third of a whole.
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Place Value
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Place value refers to the position of a particular number within a fraction. Use the number 15.236 as an example. The number 2 is part of the "tenths" place value because it is located directly after the decimal point. The number 3 is part of the "hundreths" place value because it is second from the decimal point. The number 6 is part of the "thousandths" place value because it is third from the decimal point.
Rounding
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The term "rounding" refers to the moving up or down of a decimal from one number to another when it is somewhere in between. The general rule is that any number that has a 0 - 4 in the tenths place value should be rounded down to the next whole number. Any number that has a 5 - 9 in the tenths place should be rounded up. For example, 14.3 should be rounded down to 14, while 14.67 should be rounded up to 15.
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