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Topic 1

Place Value

TermDefinition
digit Symbols used to show numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
place Where a digit sits in a number. The place gives the digit its value.
value The amount a digit represents, which is determined by the place of the digit. (worth)
standard form A common way of writing a number with commas separating groups of three digits (period) starting from the right. Example: 358.247
expanded form A way to write a number that shows the value of each digit. Example: 3 x 100 + 5 x 10 + 8 x 1 + 2 x 1/10 + 4 x 1/100 + 7 x 1/1000
word form A way to write a number using words. Example: three hundred fifty eight and two hundred forty-seven thousandths
decimal Part of a whole number written to the right of the ones place and the decimal point.
equivalent decimals Decimals that name the same amount. Example: 0.7 = 0.70 = 0.700
Created by: mrszmath
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