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Level 15

Whole Numbers


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Expanded notation
A way of writing a number that shows the place value of every digit
order of operations
The rules for calculating a maths question containing mixed operations, such as 14 - 2 x 4 + 12
place value
The way that the position of a digit in a number tells us its value
Place value chart
When we write numbers, each column has a special value
factor
A number that divides evenly into another number. 3 is a factor of 15 (look at the chart!)
Prime number
A number that can only be divided by 1 and itself. The numbers left at the bottom of the tree
Index notation
Using powers to write the repeated multiplication (eg: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3) of a number
Divisibility test
Cheats for testing whether a number can be divided by 2, 3, 4, 5, 6, 7, 8, 9 and 10
origin
The centre point of a number line (ground floor of a hotel, freezing point on a thermometer)
multiple
Answers to the Times Tables (eg: Multiples of 3 are: 3, 6, 9, 12, 15 etc.)
10 Family
This refers to the amount of zeros in a number. We DIVIDE to the left and MUL-TI-PLY-I-I to the right