Add the following fractions: a) 1/2 + 1/2, b) 2/5 + 1/5, c) 3/8 + 2/8, d) 2/7 + 3/7, e) 2/9 + 5/9, f) 3/10 + 2/10, g) 3/11 + 5/11 + 2/11

1

b)

\frac{3}{5}

c)

\frac{5}{8}

d)

\frac{5}{7}

e)

\frac{7}{9}

f)

\frac{1}{2}

g)

\frac{10}{11}

h)

\frac{11}{12}

2. Subtract the following fractions.

a)

\frac{1}{4}

b)

\frac{1}{5}

c)

\frac{2}{7}

d)

\frac{3}{4}

e)

\frac{1}{6}

f)

\frac{2}{11}

g)

\frac{1}{3}

h)

\frac{5}{12}

3. Insert the correct symbol (+ or -).

a)

Since $2+1=3$, the symbol is $+$.
+

b)

Since $4-2=2$, the symbol is $-$.

c)

Since $1-1=0$, the symbol is $-$.

d)

Since $8+5=13$, the symbol is $+$.
+

e)

Since $7+3=10$, and $\frac{10}{10}=1$, the symbol is $+$.
+

4. What fraction of the pizza is eaten? What fraction is left?

a) (This example is done for you in the image)
Fraction eaten: $\boxed{\frac{1}{4}}$
Fraction left: $\boxed{\frac{3}{4}}$

b)

It is divided into 4 equal parts, and 1 part is missing.
Fraction eaten: $\boxed{\frac{1}{4}}$

Fraction left: $\boxed{\frac{3}{4}}$

c)

It is divided into 2 equal parts, and 1 part is missing.
Fraction eaten: $\boxed{\frac{1}{2}}$

Fraction left: $\boxed{\frac{1}{2}}$

d)

It is divided into 2 equal parts, and 1 part is missing.
Fraction eaten: $\boxed{\frac{1}{2}}$

Fraction left: $\boxed{\frac{1}{2}}$