A recipe calls for 2\2\4 cups of raisins But I only have a 1\4 cup how many 1\4 cups do I need

If you mean 2 2/4, that's 10/4

1/4 / 1/4 = 10

yet, who actually writes 2 2/4 instead of 2 1/2? I suspect a typo.

And lose the \\\'s. Try /// for fractions.

To determine how many 1/4 cups of raisins you need, you can use basic math.

First, let's convert the given measurement: 2 2/4 cups to its simplified fraction form, which is 2 1/2 cups.

Since you only have 1/4 cup of raisins, you need to find out how many 1/4 cups are equivalent to 2 1/2 cups.

To do this, divide the total amount needed (2 1/2 cups) by the amount you have (1/4 cup):

(2 1/2) ÷ (1/4)

To divide fractions, you need to invert and multiply. In other words, you turn the division into a multiplication problem by taking the reciprocal of the second fraction:

2 1/2 * 4/1

Now, multiply the fractions:

2 * 4 = 8
1 * 2 = 2

The result is 8/2, which simplifies to 4.

Therefore, you would need 4 of the 1/4 cups of raisins to substitute for the required 2 1/2 cups.