Divide Whole Numbers by Unit Fractions - 5th Grade Math

$12$. Since $6 \div \frac{1}{2} = 6 \times 2$.

$\frac{1}{7}$. Since $5 \times 7 = 35$, the divisor is $\frac{1}{7}$.

$7$. Since $7 \times 6 = 42$, so $7 \div \frac{1}{6} = 42$.

$8$. Since $9 \times 8 = 72$, so $9 \div \frac{1}{8} = 72$.

$6 \times 4$. Dividing by $\frac{1}{4}$ means multiplying by 4.

$0$. Zero divided by any non-zero number equals zero.

$8$. Since $1 \div \frac{1}{8} = 1 \times 8$.

$24$. Since $2 \div \frac{1}{12} = 2 \times 12$.

How many $\frac{1}{b}$-size parts are in $n$ wholes. Counts how many pieces of size $\frac{1}{b}$ fit into $n$ wholes.

$45$. Since $15 \div \frac{1}{3} = 15 \times 3$.

$56$. Since $14 \div \frac{1}{4} = 14 \times 4$.

$22$. Since $11 \div \frac{1}{2} = 11 \times 2$.

$100$. Since $10 \div \frac{1}{10} = 10 \times 10$.

$27$. Since $3 \div \frac{1}{9} = 3 \times 9$.

$28$. Since $4 \div \frac{1}{7} = 4 \times 7$.

$n \times b$. Dividing by $\frac{1}{b}$ is the same as multiplying by $b$.

$40$. Apply the rule: $5 \div \frac{1}{8} = 5 \times 8$.

$72$. Apply the rule: $12 \div \frac{1}{6} = 12 \times 6$.

$45$. Apply the rule: $9 \div \frac{1}{5} = 9 \times 5$.