The expression in a fraction that is written above the fraction line. It is the dividend.

The expression in a fraction that is written below the fraction line. It is the divisor.

A proper fraction is a fraction where the numerator is less than the denominator.

LCM is an abbreviation for lowest common multiple.

Checking understanding of addition and subtraction with fractions

Maths

In this unit, pupils generalised and developed their fluency of multiplying with fractions. In the future unit, this understanding is extended to ratio and connections between ratios and fractions are explored.

In the prior unit, pupils explored the structure of fractions and their relationship with decimals and integers. In this unit, pupils deepen their understanding of the arithmetic procedures involving fractions and integers.

Arithmetic procedures with fractions

The most efficient way to add or subtract fractions is using the {{}}.

Which of the following is not a common denominator of $${1}\over{4}$$ and $${7}\over{12}$$?

$$\frac{2}{7} + \frac{1}{8} \square \frac{2}{7} + \frac{1}{9}$$

Calculate $${5}\over{12}$$ - $${1}\over{4}$$.

$${1}\over{4}$$ + $${3}\over{16}$$ - $${5}\over{8}$$ 

$${1}\over{4}$$ - $$\left(\frac{5}{8} + \frac{3}{16}\right)$$

$${1}\over{4}$$ + $${3}\over{16}$$ + $$\left(-\frac{5}{8}\right)$$

Which of the following is not a correct alternative for $${1}\over{4}$$ - $${5}\over{8}$$ + $${3}\over{16}$$?

Calculate $${1}\over{4}$$ - $${5}\over{8}$$ + $${3}\over{16}$$?

What is the word for the number above the fraction line?

Which of the following are equivalent to $${2}\over{3}$$?

Calculate $${2}\over{7}$$ + $${4}\over{7}$$.

Calculate $${6}\over{7}$$ - $${3}\over{7}$$.

The larger the denominator, the {{ }} the parts.

Sort the following from smallest to largest.

This lesson will soon be taken down.

Checking understanding of addition and subtraction with fractions

Lesson outcome