Chapter 7 Decimals Worksheet - New Century Maths Page 2
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38In this chapter you will:
■
revise place value and order for decimals
■
write a (terminating) decimal as a common fraction
■
add and subtract decimals
■
multiply and divide a decimal by a power of 10, a whole number or
another decimal
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use estimation and the calculator to find decimal answers
■
convert common fractions to terminating or recurring decimals
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use the notation for recurring decimals
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round decimals to a given number of places
■
solve a variety of real-life problems involving decimals and money.
Wordbank
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decimal A number that includes a decimal point and place value to
indicate parts of a whole.
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number of decimal places The number of digits after the decimal point.
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estimate An educated guess concerning the answer to a calculation.
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recurring decimal A decimal fraction that has one or more digits that
repeat forever.
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terminating decimal A decimal fraction that is not recurring, but comes
to an end.
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round To write a number to a given number of decimal places.
Think!
Why do you think people now find decimals more convenient to use than
common fractions when describing parts of a whole number?
1
■
How is writing 0.5 better than writing ?
-- -
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1
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How is writing 0.2 easier than writing ?
-- -
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3
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How is 0.75 better than ?
-- -
4
199
DECIMALS
CHAPTER 7
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