4th Grade Math 1.1, Model Place Value Relationships
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5 سال پیش
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We describe the value of
We describe the value of a digit by writing the number in a place-value chart. Our number system is called Base 10. 10 unit cubes are equal to 1 long of 10. 10 longs are equal to one flat of a hundred. 10 flats are equal to one large cube of 1000. Each place value can only hold one digit. Each model of our base ten blocks is ten times more than the model to its right. We put a comma between each group of three digits starting from the right side. We can also use a place-value chart to compare values. We find or compare the value of an underlined digit. The digit 0 has no value. We use it as a placeholder to show an empty place-value. We talk about how each place-value to the left is 10 times more than the place-value to to the right. We see what number we would get if we exchanged two of its digits. We see what would happen if we exchanged two digits in a number and one of those digits was a zero.
5 سال پیش
در تاریخ 1398/06/13 منتشر شده
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