Practice A: Adding and Subtracting Fractions

Use the common denominator 6, then subtract the equal-size parts. The simplified result is 1/2.

Use the common denominator 6, then add the equal-size parts. The simplified result is 1 1/6.

Add the fractional parts with a common denominator. Include the original 5 wholes; regroup if their sum reaches a whole.

Combine wholes (1+4) and fractional parts (1/3+1/3); rename any extra whole.

Rename one whole as denominator-sized parts if needed. The remaining quantity is 1 1/4.

Subtract whole quantities and equivalent fractional parts, borrowing one whole if the first fractional part is smaller.

Use the common denominator 8, then subtract the equal-size parts. The simplified result is 5/8.

Use the common denominator 5, then add the equal-size parts. The simplified result is 1 2/5.

Add the fractional parts with a common denominator. Include the original 5 wholes; regroup if their sum reaches a whole.

Combine wholes (2+4) and fractional parts (2/3+1/3); rename any extra whole.

Rename one whole as denominator-sized parts if needed. The remaining quantity is 3 1/3.

Subtract whole quantities and equivalent fractional parts, borrowing one whole if the first fractional part is smaller.

Use the common denominator 4, then subtract the equal-size parts. The simplified result is 1/4.

Use the common denominator 10, then add the equal-size parts. The simplified result is 7/10.

Add the fractional parts with a common denominator. Include the original 1 wholes; regroup if their sum reaches a whole.

Combine wholes (2+2) and fractional parts (3/5+3/5); rename any extra whole.

Rename one whole as denominator-sized parts if needed. The remaining quantity is 3.

Subtract whole quantities and equivalent fractional parts, borrowing one whole if the first fractional part is smaller.