P6/7 have been learning about rounding decimals, converting decimals, dividing decimals and multiplying decimals.
Rounding decimals is the same as rounding tens or hundreds etc. If you were rounding tenths, you would look at the hundredths and if the hundredth is five or over, the tenth would be one unit higher, like; 1.48=1.5 You take away the zero because it has no use to you at all any more.
Multiplying by 10, 100 and 1000 with decimals is the same as multiplying any digits. All you do is move the digits to the left. If you were multiplying by 10, you move the digits 1 place to the left, with 100 you move the digits 2 places to the left and with 1000 you move the digits 3 places to the left. It is the same with diving but with dividing, you move the digits the right.
Converting decimals is easy as well. Zero point four equals four tenths. The four is in the tenth column so in the denominator of the fraction is a tenth and in the numerator of the fraction is four because that is how many tenths there are. The same would happen if there is a digit in the hundredth column, but instead of the tenth it would be a hundredth and the digit on top would be the number in the hundredths column.
By Anwen and Elizabeth
