topic badge
CanadaON
Grade 5

Identify lowest common denominators

Interactive practice questions

Find the lowest common denominator of $\frac{1}{2}$12 and $\frac{1}{7}$17.

To do this, we will look at the multiples of $2$2 and $7$7.

a

Fill in the table with the first ten multiples of $2$2.

$\times$×

$1$1 $2$2 $3$3 $4$4 $5$5 $6$6 $7$7 $8$8 $9$9 $10$10
$2$2 $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$
b

Fill in the table with the first ten multiples of $7$7.

$\times$×

$1$1 $2$2 $3$3 $4$4 $5$5 $6$6 $7$7 $8$8 $9$9 $10$10
$7$7 $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$ $\editable{}$
c

Hence, what is the lowest common denominator of $\frac{1}{2}$12 and $\frac{1}{7}$17?

Easy
2min

Find the lowest common denominator of $\frac{1}{2}$12 and $\frac{6}{7}$67.

To do this, we will look at the multiples of $2$2 and $7$7.

Easy
2min

Find the lowest common denominator of $\frac{4}{5}$45 and $\frac{11}{12}$1112.

Easy
< 1min

Find the lowest common denominator of $\frac{1}{12}$112 and $\frac{1}{7}$17.

Easy
1min
Sign up to access Practice Questions
Get full access to our content with a Mathspace account

Outcomes

5.NN1.06

Demonstrate and explain the concept of equivalent fractions, using concrete materials

What is Mathspace

About Mathspace