Topic quiz (fractions addition and subtraction)

Topic quiz (fraction addition and subtraction)

Open Ended

What is the least common multiple (lcm) of a group of numbers?

Open Ended

What is the lcm between 9 and 12?

Open Ended

What is the lcm between 2, 7, and 28?

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Use the lcm to solve the following:

$$\frac{2}{4}+\frac{5}{12}$$
$$\frac{1}{8}-\frac{1}{10}$$

Open Ended

Use the lcm to solve the following:

$$2\frac{2}{3}+3\frac{2}{4}$$
$$4\frac{5}{6}-2\frac{3}{4}$$