A recurring decimal is one that has an infinite number of digits after the decimal point

Limitations of technology in calculations

Maths

In this unit, pupils have explored the structure of fractions and their relationship with decimals and integers. This is built on in the future unit where pupils deepen their understanding of the arithmetic procedures involving fractions and integers.

In this unit, pupils will be asked to compare and order both fractions and decimals and will assess when conversion is required. Fluency in working with decimals and integers is an important skill which is developed in the prior unit.

Comparing and ordering fractions and decimals (positive and negative)

9 as the calculator ignores the priority of operations

-9 as the calculator follows the priority of operations

Jacob uses his calculator to evaluate $$-3^2$$. What will the calculator display as the answer?

Working with fractions is always more accurate than using decimals. 

The calculator displays the decimal 1.234567891. Which of the following could this decimal be?

Use your calculator to covert 0.6252 into a fraction. The numerator will be {{ }}

Use your calculator to covert 0.0625 into a fraction. The denominator will be {{ }}

Using a calculator, calculate the simplified fraction of $$196 \over 190$$.

Using a calculator, work out the answer to $${16 \over 15} \times {30 \over 32}$$.

Izzy's calculator gives an answer as a fraction. What is the name of the key that should be pressed last on the Casio fx-991CW in order to convert this fraction to a decimal?

Using a calculator, match the decimal to the equivalent fraction.

The format key on the Casio fx-991CW allows you to change between decimals, improper fractions and mixed numbers.

Using your calculator, find the answer to $${21 \over 12} \times {2 \over 3}$$

This lesson will soon be taken down.

Limitations of technology in calculations

Lesson outcome