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name the property
a+0=0+a=a
zero in additive


(a+b)+c=a+(b+c)
assosiative property

write 4,205,012 in expanded form
four million , two hundred five thousand , twelve

word to recognise subraction
decrease, diffrence, less than, subtract

what is peremeter (p)
the distance around the outside of a figure. add the lenth of all sides.

name the places
a x b = c
^ ^ ^
1 2 3

solve for ending in zero
4x10=40
4x100=400
4x1000=4000

multiply
150 x 1290 =
193,500

multiply
306 x 728=
222,768

name the places
a / b = c
^ ^ ^
1 2 3
 1 dividend
 2 divisor(chopper)
 3 quotient


how do u check division
multiply the anwser buy the divider



area of a rectangle . what is the formula
area = length x width

what is the area of a rectangle with the width of 15m and a length of 24 meters
360 meters squared

define a fraction
a part of a whole number

what is a proper fraction
a fraction less that 1 ex(2/5)

what is a improper fraction
more or equal to 1

whats a mixed number
a whole part and a praction part

multiply this fraction
3/4 x 6/7 =
9/14

multiply this fraction
2/3 x 9 =
6

what is the 3 word trick to dividing fractions
keep change flip

divide this fraction
3/4 DIVIDED BY 2/7 =

to add or subract fractions with the same denominator add and/subtract the numerator and keep the demomiator unchanged.
a/b + c/b = a+c /b

writing decimals in words
4,3018
four and three thousand eighteen ten thousandths

write the decimal in words
.018
eighteen thousandths

write this sentence in decimal form
"one hundred thirty four thousandths"
.134

convert this fraction into a decimal
79/100 =
.79

convert this decimal to a fraction
.281
281/1000

to add/subract decimal numbers
 1)line up the place values( decpts)
 2)add/subract
 3)put the dec pt where it was in the problem

find the product
0.76
x0.31

 76
 228
 
 2356.<move 4 places to the left
 = .2356

