Tagged: decimal


Decimal line zooming

“Surely 3.12 is a lot bigger than 3.2 because 12 is bigger than 2…!” said one of my students the other day. I do see where students are coming from with this misconception and you can dive into place value and talk about hundredths being smaller than tenths, but another model that I’ve found successful is the “zooming in on...


New approach for converting between fractions, decimals and percentages?

I have always found converting between fractions, decimals and percentages a challenging topic to teach when you’ve got pupils who have difficulty with mental and written arithmetic. Quite often you seem to get bogged down in the arithmetic of the calculation, and the pupils lose sight of why we are doing it in the first place. Rather than plod on...


The ordering decimals game

There are lots of ways that you can go about teaching ordering decimal numbers by size. Developing pupils’ understanding of where decimals sit on the numberline is one approach. Getting them to understand that if we want to put a number on the numberline between 3.4 and 3.5, that we need a second decimal digit to do this is one...