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Math
for
Parents Place
Value and Base Ten Place
Value Our entire numeration system is based on the idea of grouping things in groups of tens. This is called the Base Ten system of counting. The “place” a numeral occupies in our Base Ten system is what gives that numeral its value. Hence the term “place value”. How many different numerals do we use in our numeration system? How many numerals would we need if we didn’t use that system? Base Ten Base ten is groups of ten. If we used base five it would br groups of five. Ones are placed into groups of ten to make tens. Tens are placed into groups of ten to make hundreds. Hundreds are placed into groups of ten to make thousands etc. etc. “A group of ten ones is the same as one ten” “A group of ten tens is the same as one hundred” “A group of ten hundreds is the same as one thousand” Counting
large numbers Numerals
in each “place” can be counted in just the same way as ones. Number names Decade names can be developed by counting groups of ten and then renaming as in “ five
tens are the same as fifty”. “three hundreds are the same as three
hundred” Numbers in between like 53 follow a counting pattern Writing and saying large numbers Follows a repeating pattern all the way to infinity (wherever that is) of ones, tens and hundreds. The 0 identifies nothing or a lack of quantity as opposed to a “place holder”. (language)
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Math
at Home *
Look for written large numbers * Read large numbers to children - children say number with you or repeat after you *
Finds large numbers of things and count them out grouping them in tens
etc. *
Play games which involve counting large sums of
“money”. * Play computer games which utilize very large numbers for scores. *
Explore Roman Numerals * Identify things that come in tens, hundreds, thousands, millions etc
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