4/4 + 4/4 = 2
But if you want an answer of 20:
4/4=1+4=5x4=20
Any of them. To get 50 to 30 you could... subtract 20 add -20 divide by 5/3 multiply by 3/5
it means multiply the the number in the ones place by two and use that number to subtract
You can multiply to get the closest possible answer and then subtract and whatever you got from subtracting subtract it by how many times you can multiply the divisor.
You multiply the length by 2 (because there are two sides of the rectangle that have that measure). You then subtract that number from the perimeter. The number you will be left with is twice the width, so you divide that by two and you get the width of the rectangle.
Here is how I arrived at the answer: start with the number seven add two, multiply by four, divide by three, subtract five. The answer is seven. Ceck it: seven plus five is 12, 12 times three is 36, 36 divided by four is nine Nine minus two is seven.
you multiply
Add, subtract, multiply, divide, sum, minus, times, go into, total, take away, compound, divisible
divide or multiply the number x times.
Multiply the whole number times the numerator. Divide the product by the denominator.
You get 3 quarters of a number by multiplying the number by .75; or you can multiply it by .25 and then multiply the product by 3. Or, you can multiply the number by 3, and then divide the product by 4.Half it and half it again. Then times it by 3
42.1589
-N/i=-Ni/(i*i) = (multiply top and bottom by i -Ni/-1 = Ni (i times i) = -1 You get a positive number (N) times i.