decimal learning

We are learning to:

Explain what decimals actually are and how they link to fractions and percentages.

decimals are part of a whole

on the left side of the dot is the whole,and the right side is the decimals (parts of the whole).
the dot in the decimal seperates the whole number and the parts of the whole.

these are deci pipes we use them to make the decimal and its easy to explain.

this is the whole and if you look at the tenths,hundredths and thousandths

it makes sense they all take up other 10,100,1000 because they get smaller and smaller!

these are tenths that are just after the decimal point e.g = 2.3 the 3 is a tenth. i tenth is called a tenth because ten of them make a whole. below is a picture of the deci pipe tenths if you look it looks like a whole and it is because there are ten tenths and 10 tenths make a whole! 

now above are hundredths and they are after the tenths e.g 2.34 the 4 is the hundredths.hundredths are called hundredths because a 100 if them make a whole!

now these are thousandths and they are after the hundredths like this e.g - 2.345 the 5 is the thousandths. a thousand thousandths make a whole!

tenths

Read and identify decimals to two decimal places.

reading decimals is a piece of cake!

so here is an example- 7.167

so you would say- seven point one six seven

you never say-seven point 1 hundred and sixty-seven because the are completely different and you don't join them together.

Order decimals to three places, for examples, 6.25 and 6.3
3.946
2.669
now look at the whole number - the top one has 3 wholes,9 tenths,4 hundredths and 6 thousandths.
and the bottom has- 2 wholes,6 tenths,6 hundredths and 9 thousandths.

compare the wholes:
3-2 which one is bigger? = 3 wholes

compare the tenths:
9-6 which one is bigger? = 9 tenths

compare the hundredths:
6-4 which one is bigger? =6 hundredths

compare the thousandths:
9-6 which one is bigger? = 9 thousandths


now look at what whole is bigger.
since one whole is bigger it audomatically makes the 3.946 bigger
but if they had the same whole you would go to the tenths if they had the same tenths go to the hundredths and so on......


By: Shanelle