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22 Cards in this Set
- Front
- Back
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Integer |
a whole number
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To read integers
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you group in threes from the units column up, labelling thousands, millions, billions, trillions and more if necessary. Then you read out the hundreds, tens and units for each group, starting with the biggest.
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Place value for integers
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from the units column, getting bigger, goes tens, hundreds, thousands, ten thousands, hundred thousands, millions, ten millions, hundred millions, billions
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Place value for decimals |
from the units column, getting smaller goes tenths, hundredths, thousandths, ten thousandths, hundred thousandths, millionths
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To compare decimals |
write them on top of one another, lining up the decimal point, and compare from left to right.
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Ascending
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going up in size, from smallest to biggest
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Descending
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going down in size, from biggest to smallest
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< |
less than
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>
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greater than
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In an integer, the decimal point
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is hiding behind the last digit – after the units column
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To add or subtract decimals
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line up the units columns and decimal points in all the numbers and fill in the gaps with zeroes
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Perimeter is
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the total distance around the outside of a shape
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To find the perimeter
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first label all the sides, then add up
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Angles in a triangle
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add up to 180°.
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Angles on a straight line
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add up to 180°.
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Angles around a point
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add up to 360°.
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4 words meaning addition
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total, sum, altogether, plus
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4 words meaning subtraction
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difference, leftover, take away, minus
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Whole is equal to
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all the parts added together
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One part is equal to
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the whole with all the other parts taken away
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An equation is
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a mathematical statement telling you one thing is equal to another
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To rearrange an equation |
do the same thing to both sides
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