Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Fractions, Exercise 3: Exercise 7.2

This is part of Kia's homework. She has made a mistake is her solution.

Question: Work out $5\frac{3}{8}+7\frac{5}{6}$

Solution $\overline{)1} 5+7=12$

              $\overline{)2} \frac{3}{8}+\frac{5}{6}=\frac{9}{24}+\frac{20}{24}=1\frac{4}{24}=1\frac{1}{6}$

              $\overline{)3} 12+1\frac{1}{6}=13\frac{1}{6}$

Explain the mistake that Kia has made.

This is part of Kia's homework. She has made a mistake is her solution.

Question: Work out $5\frac{3}{8}+7\frac{5}{6}$

Solution $\overline{)1} 5+7=12$

              $\overline{)2} \frac{3}{8}+\frac{5}{6}=\frac{9}{24}+\frac{20}{24}=1\frac{4}{24}=1\frac{1}{6}$

              $\overline{)3} 12+1\frac{1}{6}=13\frac{1}{6}$

Work out the correct answer.

Copy and complete the pyramid.

Simplify the following expression by collecting the like terms.

$1\frac{3}{4}x+3\frac{3}{4}x$

Simplify the following expression by collecting the like terms.

$2\frac{1}{2}y+2\frac{2}{3}x+6\frac{3}{5}y$

Simplify the following expression by collecting the like terms.

$5\frac{7}{8}a+6\frac{4}{7}b+2\frac{2}{3}a+2\frac{1}{2}b$

Simplify the following expression by collecting the like terms.

$1\frac{1}{5}p+2\frac{3}{8}q+\frac{2}{3}p+7\frac{4}{5}q$

Work out the perimeter of this quadrilateral.