7/21/2019 Khan Academy - Math 3 Grade

http://slidepdf.com/reader/full/khan-academy-math-3-grade 1/1

Equivalent Fractions

2/3=4/6=6/9

1 numerator arithmitis-2 denominator paranomastis

4/7 > 3/7 < less then, > greater then

When you compare fractions you assume that youcompare fractions of the same whole.

Area = How much space takes something

Emvadon = Mikos X Platos

Area = Width X Length 2 X 3 = 6

Area = 6 square meters

Area of rectangles and the distributive

9 x ( 8 + 12) 1st way

9 x 8 , 9 x 12

45

Perimeter = The length of the boundary

If you have 35 you round up to 40

Properties and patterns for multiplication

6 X 36 = 6 x (30+6) = (6x30) + (6x6)= 180 + 36= 216