Fractions
India
Class VII
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
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