0
try to memorise this
positiveXpositive=positive
NegativeXpositive=negative
positiveXnegative=negative
negativeXnegative=positive
a - c -ac
---- 0 ----- = --------
b d bd
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
How do you multiply a negative fraction and a positive fraction?
The same as any two fractions. In this case, the answer will be negative.
How do you multiply negative mixed numbers?
Convert them to improper fractions and proceed. The answer will be positive.
How can you use models to multiply fractions?
No, you cannot use models to multiply fractions!!
Why do you invert fractions?
When you divide by fractions, you invert and multiply.
When you multiply fractions do you multiply the denominator?
yes. you multiply the numerator and denominator
How do you multiply a negative fraction and a positive fraction?
The same as any two fractions. In this case, the answer will be negative.
How do you multiply negative mixed numbers?
Convert them to improper fractions and proceed. The answer will be positive.
What does it mean to multiply and divide fractions?
multiply and divide fractions!-.-
Is negative 16 divided by 9 equal to 32 divided by negative 18?
Yes it is; note if you multiply numerator & denominator by 2 the fractions are the same.
How do you multipy two negative fractions?
same as you would multiply 2 normal fractions. Note: a negative times a negative = a positive so - a/b x - c/d = ac/bd e.g -1/2 x - 3/5 = 3/10
What is perpendicular fractions?
perpendicular fractions are gradients and are negative recipricals of each other and that multiply to give -1 for example:2/1 times -1/2 gives -1
How can you use models to multiply fractions?
No, you cannot use models to multiply fractions!!
How do you find volume with fractions?
You multiply the fractions
What is the difference between cross and across?
When you add or subtract fractions you cross multiply and when you multiply or divide fractions you across multiply.
Do you multiply the denominator when you multiply fractions?
Yes you do.
Why do you invert fractions?
When you divide by fractions, you invert and multiply.
How do you divide fractions when both fractions are negative?
A negative number divided by a negative number is positive. Therefore, it's the same as if both fractions were positive.
