Question

3. To make a cake, Rose needed 1 cups of sugar. This is 1 cups less than the amount of flour she needed for the cake. Write a subtraction equation that could be used to find the amount of flour she needed for the cake. (Example 1)

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Answer 1

The subtraction equation that could be used is,

cups of sugar = cups of flour - 1

s = f - 1

(where s is cups of sugar and f is cups of flour)

if we so wished, we could solve this since cups of sugar is 1,

so, 1 = f - 1 which gives, 1+1=f = 2

so, She needed 2 cups of flour (but that is not what is asked)

Explanation:

Rose needed 1 cup of sugar,

And it is 1 less than the amount of flour she needed,

Let the cups of sugar she needs be s,

And we are given that s = 1 (since she needs 1 cup)

Let the cups of flour be f,

and we are told that the cups of sugar are 1 less than the cups of flour,

so,

cups of sugar = cups of flour - 1

s = f - 1