## Video and Examples

This video will show you how to subtract fractions from a whole number. Sample $3\,-\,1\frac{3}{4}\,=$

If you have a dollar, you can always cash it in for four quarters - it is an even exchange. This can be represented mathematically as $1\,=\,\frac{4}{4}$.

Similarly, if you have 3 dollars, you can cash in one of those dollars for four quarters, leaving you with two dollars and four quarters - the same amount of money as $3. This can be represented mathematically as$3\,=\,2\frac{4}{4}$. We are going to use this idea of exchanging a whole number for an equivalent amount of fractions to learn how to subtract fractions from a whole number. Example 1:$4\,-\,1\frac{2}{5}\,=$Step 1: Model the first number Step 2: Regroup the first number Step 3: Subtract Example 2:$6\,-\,4\frac{5}{8}\,=$Step 1: Model the first number Step 2: Regroup the first number Step 3: Subtract For more practice with fractions, please try this Fraction Calculator. Self-Check function toggle1() { var ele = document.getElementById("toggleText1"); var text = document.getElementById("displayText1"); if (ele.style.display == "block") { ele.style.display = "none"; text.innerHTML = "[show answer]"; } else { ele.style.display = "block"; text.innerHTML = "[hide answer]"; } } Question 1$9\,-\,2\frac{1}{5}\,=$[show answer]$9\,-\,2\frac{1}{5}\,=8\frac{5}{5}\,-\,2\frac{1}{5}\,=6\frac{4}{5}$function toggle2() { var ele = document.getElementById("toggleText2"); var text = document.getElementById("displayText2"); if (ele.style.display == "block") { ele.style.display = "none"; text.innerHTML = "[show answer]"; } else { ele.style.display = "block"; text.innerHTML = "[hide answer]"; } } Question 2$4\,-\,1\frac{3}{8}\,=$[show answer]$4\,-\,1\frac{3}{8}\,=3\frac{8}{8}\,-\,1\frac{3}{8}\,=2\frac{5}{8}$function toggle3() { var ele = document.getElementById("toggleText3"); var text = document.getElementById("displayText3"); if (ele.style.display == "block") { ele.style.display = "none"; text.innerHTML = "[show answer]"; } else { ele.style.display = "block"; text.innerHTML = "[hide answer]"; } } Question 3$12\,-\,7\frac{2}{7}\,=$[show answer]$12\,-\,7\frac{2}{7}\,=11\frac{7}{7}\,-\,7\frac{2}{7}\,=4\frac{5}{7}