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How do you use rectangular models for multiplying fractions?
Draw as many rectangles as the whole number you are multiplying by. Then, draw the fraction you are multiplying by in all of the rectangles. Shade in the top number in the fraction [numerator] in your rectangles. Count all the shaded in parts of all your rectangles. Leave the bottom number of your fraction [denominator] the same and put the number you got when you added the shaded parts of the rectangles on top as your denominator of the fraction. That is your answer!
Can you shade in 2 rectangles in a square with 2lines of symmetry?
Yes: . . . . . . . . . . . . . . . . ----------------- . . | . . . . . . . . . . . | . . | . # . . . . . # . | . . | . # . . . . . # . | . . | . # . . . . . # . | . . | . # . . . . . # . | . . | . . . . . . . . . . . | . . ----------------- . . . . . . . . . . . . . . . . The #s represent two shaded rectangles in the line marked square (sorry for the wiggly line). The square has two lines of symmetry: running centre top to centre bottom & centre left to centre right.
What decimal fraction is shaded 10 squares 3 shaded?
3/10 are shaded.
If one fifth of a region is not shaded what part is shaded?
If one fifth of a region is not shaded then 4 fifths of the region is shaded. Fifths means there are five parts.
How do you find if you shaded all but three eighths of the rectangle what percent of the rectangle is not shaded?
Well, darling, if you shaded all but three eighths of the rectangle, then the shaded area is 5/8 of the total rectangle. To find the percentage of the rectangle that is not shaded, you subtract the shaded area from 100%. So, 100% - 62.5% (5/8 as a percentage) = 37.5%. Voilà, 37.5% of the rectangle is not shaded.
