Question

how could you use the relationship between addition and subtraction with counting up to find 3 1/4 - 1 3/4

Answer 1

1 1/2

Step-by-step explanation:

We can illustrate the relationship between addition and subtraction using the following example:

If we have 5 - 3 = 2, then we can say that 2 + 3 = 5

So, in this case, the result of 3 1/4 - 1 3/4 is a number that added to 1 3/4 is equal to 3 1/4. Then, the answer will be 1 2/4 because:

`1(3)/(4)+1(2)/(4)=(7)/(4)+(6)/(4)=(13)/(4)=3(1)/(4)`

Because 1 3/4 is equivalent to 7/4 and 1 2/4 is equivalent to 6/4.

Finally, 2/4 is equivalent to 1/2, so we can rewrite the result 1 2/4 as follows:

1 2/4 = 1 1/2

Therefore, the answer is 1 1/2