factors of 10
multiples of 10
10, 20, 30
3 + (5 +6) = 3 + (6 +5)
3 + (5 + 6) = (3 + 5) + 6
compares parts of a whole
shows change over time
add numbers around outside of shape
add all numbers and divide by how many numbers there are
middle number AFTER putting numbers in order
number that occurs the most
highest number minus lowest number
distance around a circle
Greatest Common Factor
Least Common Multiple
area of a rectangle
L x W
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